Avulsion fracture: Difference between revisions

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{{SI}}
{{CMG}}; {{AE}}[[User:DrMars|Mohammadmain Rezazadehsaatlou[2]]].
==Overview<ref name="pmid27921119">{{cite journal |vauthors=Beeres FJ, Oehme F, Babst R |title=[Distal humerus fracture-extensile approaches] |language=German |journal=Oper Orthop Traumatol |volume=29 |issue=2 |pages=115–124 |date=April 2017 |pmid=27921119 |doi=10.1007/s00064-016-0474-4 |url=}}</ref><ref name="pmid29169602">{{cite journal |vauthors=Shearin JW, Chapman TR, Miller A, Ilyas AM |title=Ulnar Nerve Management with Distal Humerus Fracture Fixation: A Meta-Analysis |journal=Hand Clin |volume=34 |issue=1 |pages=97–103 |date=February 2018 |pmid=29169602 |doi=10.1016/j.hcl.2017.09.010 |url=}}</ref>==
The injuries of the ball-and-socket shoulder joint considered as the Distal humerus fracture. It is more common among the elderly population following a low energy trauma such as falling. Meanwhile, A few people experience the axillary nerve damage such as reduced sensation around the middle deltoid and/or axillary artery involvement.
== Historical Perspective ==
There are no reliable information regarding the historical perspective of the hip bone fracture.
==Causes<ref name="pmid26808044">{{cite journal |vauthors=Abzug JM, Ho CA, Ritzman TF, Brighton BK |title=Transphyseal Fracture of the Distal Humerus |journal=J Am Acad Orthop Surg |volume=24 |issue=2 |pages=e39–44 |date=February 2016 |pmid=26808044 |doi=10.5435/JAAOS-D-15-00297 |url=}}</ref><ref name="pmid28345195">{{cite journal |vauthors=Kay M, Simpkins C, Shipman P, Whitewood C |title=Diagnosing neonatal transphyseal fractures of the distal humerus |journal=J Med Imaging Radiat Oncol |volume=61 |issue=4 |pages=494–499 |date=August 2017 |pmid=28345195 |doi=10.1111/1754-9485.12607 |url=}}</ref>==
The main etiology of the [[Distal humerus fracture]] is thought to be an axial loading may be placed on a hyperpronated forearm during falling onto an outstretched hand (FOOSH)  with an extended wrist and hyperpronated forearm and shoulder. Because at this posture the energy from the radius fracture transmitted towards the shoulder joint cause the fracture and/or dislocation of the humerus bone.
== Pathophysiology <ref name="pmid25615780">{{cite journal |vauthors=Supakul N, Hicks RA, Caltoum CB, Karmazyn B |title=Distal humeral epiphyseal separation in young children: an often-missed fracture-radiographic signs and ultrasound confirmatory diagnosis |journal=AJR Am J Roentgenol |volume=204 |issue=2 |pages=W192–8 |date=February 2015 |pmid=25615780 |doi=10.2214/AJR.14.12788 |url=}}</ref><ref name="pmid30146852">{{cite journal |vauthors=Antabak A, Andabak M, Barišić B, Papeš D, Romić I, Fuchs N, Luetić T |title=FRACTURE OF THE HUMERUS IN CHILDREN – CAUSES AND MECHANISMS OF INJURY |journal=Lijec Vjesn |volume=138 |issue=3-4 |pages=74–8 |date=2016 |pmid=30146852 |doi= |url=}}</ref><ref name="pmid28479469">{{cite journal |vauthors=Salvati S, Settembrini AM, Bissacco D, Dallatana R, Mazzaccaro D, Crippa C, Romano P, Settembrini P |title=Vascular Injury Due to Humerus Fracture in Pediatric Age: When the Treatment Is Mandatory |journal=Ann Vasc Surg |volume=44 |issue= |pages=420.e11–420.e15 |date=October 2017 |pmid=28479469 |doi=10.1016/j.avsg.2017.03.184 |url=}}</ref><ref name="pmid29025604">{{cite journal |vauthors=Pantalone A, Vanni D, Guelfi M, Belluati A, Salini V |title=Double plating for bicolumnar distal humerus fractures in the elderly |journal=Injury |volume=48 Suppl 3 |issue= |pages=S20–S23 |date=October 2017 |pmid=29025604 |doi=10.1016/S0020-1383(17)30652-6 |url=}}</ref>==
=== Mechanism ===
The [[Distal humerus fracture]] is caused by a fall on the outstretched hands. The form and severity of this fracture depends on the position of the shoulder joint at the moment of hitting the ground. The width of this mentioned angle affects the localization of the fracture. Pronation, supination and abduction positions leads the direction of the force and the compression of carpus and different appearances of injury.
=== Pathophysiology ===
Its known that the [[Distal humerus fracture]] in normal healthy adults can be caused due to the high-energy trauma (e.g., motor vehicle accidents), sport related injuries, falling from height. But it should be noted that the most important Risk factors for insufficiency fractures is chronic metabolic disease such as steoporosis, osteopenia, eating-disordered behavior, higher age, prolonged corticosteroid usage, female gender, lower BMI, history of a recent falling, and prior fracture.
* The pattern of bone fracture and severity of injury depends on variety of factors such as:
** Patients age
** Patients Weight
** Patients past medical history specifically any bone diseases affecting the quality of bone (such as osteoporosis, malignancies)
** Energy of trauma
** Bone quality
** Position of the specific organ during the trauma
* The below-mentioned processes cause decreased bone mass density:
** [[Autophagy]] is the mechanism through which [[Osteocyte|osteocytes]] evade [[oxidative stress]].
** The capability of [[autophagy]] in cells decreases as they age, a major factor of [[Ageing|aging]].
** As [[Osteocyte|osteocytes]] grow, viability of cells decrease thereby decreasing the bone mass density.
==Differentiating  [[Distal humerus fracture]] from other Diseases<ref name="pmid24183393">{{cite journal |vauthors=Maresca A, Pascarella R, Bettuzzi C, Amendola L, Politano R, Fantasia R, Del Torto M |title=Multifocal humeral fractures |journal=Injury |volume=45 |issue=2 |pages=444–7 |date=February 2014 |pmid=24183393 |doi=10.1016/j.injury.2013.10.010 |url=}}</ref><ref name="pmid1630966">{{cite journal |vauthors=Jupiter JB, Mehne DK |title=Fractures of the distal humerus |journal=Orthopedics |volume=15 |issue=7 |pages=825–33 |date=July 1992 |pmid=1630966 |doi= |url=}}</ref>==
In the orthopedic medicine its important to know that the forearm fracture should be evaluated using radiography for both confirming diagnosis and also for evaluating the surrounding tissues. Other injuries such as possible shoulder fracture-dislocation; radial head or coronoid fractures or lateral collateral ligament injury. If the mechanism of injury suggests particularly low energy then the Osteoporosis should be considered. The pathological Fractures occurring in a bone with a tumor or Paget's disease) are rare but possible[3].
Also it should be noted that the both bone fractures can be complicated by acute compartment syndrome of the forearm. Signs suggesting compartment syndrome are pain on extension of digits, and marked edema[3].
As another important fact in orthopedic fracture is if both-bone fractures were found in pediatric which is common after accidental trauma, but it may also be the due to the of child abuse; and in these cases a careful attention and evaluation should be considered if a child abuse is suspected
Differential Diagnoses for the Distal humerus fracture:
* Elbow Fracture
* Elbow Dislocation
==Epidemiology and Demographics <ref name="pmid22162357">{{cite journal |vauthors=Kim SH, Szabo RM, Marder RA |title=Epidemiology of humerus fractures in the United States: nationwide emergency department sample, 2008 |journal=Arthritis Care Res (Hoboken) |volume=64 |issue=3 |pages=407–14 |date=March 2012 |pmid=22162357 |doi=10.1002/acr.21563 |url=}}</ref><ref name="pmid24075780">{{cite journal |vauthors=Charissoux JL, Vergnenegre G, Pelissier M, Fabre T, Mansat P |title=Epidemiology of distal humerus fractures in the elderly |journal=Orthop Traumatol Surg Res |volume=99 |issue=7 |pages=765–9 |date=November 2013 |pmid=24075780 |doi=10.1016/j.otsr.2013.08.002 |url=}}</ref>==
The elbow joint fractures count for 4.3% of all fractures. Meanwhile, the distal humerus fractures account for 2% of all fractures. Also, it count as 30% the elbow fracture. both medial and lateral columns are usually involved in distal humerus fractures. Comparing to epidemiological data of the Japan and European countries, the incidence rates of humerus fractures are higher in the United states population.
==Risk Factors <ref name="pmid28938085">{{cite journal |vauthors=Rosado N, Ryznar E, Flaherty EG |title=Understanding humerus fractures in young children: Abuse or not abuse? |journal=Child Abuse Negl |volume=73 |issue= |pages=1–7 |date=November 2017 |pmid=28938085 |doi=10.1016/j.chiabu.2017.09.013 |url=}}</ref>==
There are different risk factors that presidpose patient for the  [[Distal humerus fracture]] that include:
* High-risk contact sports
* Higher age (elderly adults are higher prone to such fractures)
* Reduced bone density (osteoporosis)
* Direct blow
* Road / traffic accidents
* Falling on an outstretched hand with the forearm pronated
* Direct trauma to the arm/forearm
* Taking part in any rough or high-impact sport
* Street fights, gunshot wounds, and domestic violence, may also cause the Humerus fracture
* Road traffic accidents.
== Classification <ref name="pmid19258140">{{cite journal |vauthors=Brouwer KM, Guitton TG, Doornberg JN, Kloen P, Jupiter JB, Ring D |title=Fractures of the medial column of the distal humerus in adults |journal=J Hand Surg Am |volume=34 |issue=3 |pages=439–45 |date=March 2009 |pmid=19258140 |doi=10.1016/j.jhsa.2008.11.022 |url=}}</ref><ref name="pmid7713970">{{cite journal |vauthors=Kuhn JE, Louis DS, Loder RT |title=Divergent single-column fractures of the distal part of the humerus |journal=J Bone Joint Surg Am |volume=77 |issue=4 |pages=538–42 |date=April 1995 |pmid=7713970 |doi= |url=}}</ref><ref name="pmid12571299">{{cite journal |vauthors=Ring D, Jupiter JB, Gulotta L |title=Articular fractures of the distal part of the humerus |journal=J Bone Joint Surg Am |volume=85-A |issue=2 |pages=232–8 |date=February 2003 |pmid=12571299 |doi= |url=}}</ref><ref name="pmid23174324">{{cite journal |vauthors=Miller AN, Beingessner DM |title=Intra-articular distal humerus fractures |journal=Orthop. Clin. North Am. |volume=44 |issue=1 |pages=35–45 |date=January 2013 |pmid=23174324 |doi=10.1016/j.ocl.2012.08.010 |url=}}</ref><ref name="pmid27049206">{{cite journal |vauthors=Abzug J, Ho CA, Ritzman TF, Brighton B |title=Transphyseal Distal Humerus Fracture |journal=Instr Course Lect |volume=65 |issue= |pages=379–84 |date=2016 |pmid=27049206 |doi= |url=}}</ref><ref name="pmid27965047">{{cite journal |vauthors=Atalar AC, Tunalı O, Erşen A, Kapıcıoğlu M, Sağlam Y, Demirhan MS |title=Biomechanical comparison of orthogonal versus parallel double plating systems in intraarticular distal humerus fractures |journal=Acta Orthop Traumatol Turc |volume=51 |issue=1 |pages=23–28 |date=January 2017 |pmid=27965047 |pmc=6197297 |doi=10.1016/j.aott.2016.11.001 |url=}}</ref><ref name="pmid28644121">{{cite journal |vauthors=Eglseder WA, Paryavi E |title=Intercondylar Fractures of the Distal Humerus in Patients Younger Than 20 Years: Capsulectomy Results |journal=J Surg Orthop Adv |volume=26 |issue=2 |pages=98–101 |date=Summer 2017 |pmid=28644121 |doi= |url=}}</ref>==
The distal humerus fracture may be classified based on the exact location of fracture:
==Screening<ref name="pmid22219241">{{cite journal |vauthors=Popovic D, King GJ |title=Fragility fractures of the distal humerus: What is the optimal treatment? |journal=J Bone Joint Surg Br |volume=94 |issue=1 |pages=16–22 |date=January 2012 |pmid=22219241 |doi=10.1302/0301-620X.94B1.27820 |url=}}</ref>==
Osteoporosis is an important risk factor for human affecting human bone especially in men with the age of older than 50 years old and [[postmenopausal]] and women.
Based on the [[US Preventive Services Task Force|US Preventive Services Task Force (USPSTF)]] there are three groups of patients need to be screened for the [[osteoporosis]]:
* ·       Men with no history of [[osteoporosis]]
* ·       Women with the age of 65≤ year old, with no previous history of pathological [[fracture]] due to the [[osteoporosis]]
* ·       Women with the age of <65 years, with 10-year [[fracture]] risk of not less than a 65-year-old white woman (who has not any other risk factor)
Accordingly women older than age of 50 are the main target for the [[osteoporosis]] screening. There is no specific recommendation to screen men for the [[osteoporosis]].<sup>[[Distal radius fracture screening#cite note-pmid21242341-1|[1]]]</sup>
The [[USPSTF]] recommendations from 2002 included:
Meanwhile, there are two major modalities for the [[osteoporosis]] screening:
# ·       [[Dual energy X-ray absorptiometry|Dual energy x-ray absorptiometry (DXA)]] of the [[hip]] and [[lumbar spine]] [[bones]]
# ·       Quantitative [[ultrasonography]] of the [[calcaneus]]
<nowiki>*</nowiki>It should be noted of the two above mentioned modalities for screening the ultrasonograhy is preferred to the DXA due to its lower cost, lower [[ionizing radiation]], more availability.
After the primary evaluation of the [[osteoporosis]], the further evaluation are required in some cases such as:
·       Women with normal [[bone density]] or mild [[osteopenia]]: T-score of greater than −1.50 – should have screening for 15 years.
·       Women with moderate [[osteopenia]]: T-score of −1.50 to −1.99 – should have screening for 5 years.
·       Women with advanced [[osteopenia]]: T-score of −2.00 to −2.49 - should have screening for 1 year.
==Natural History, Complications and Prognosis <ref name="pmid22981357">{{cite journal |vauthors=Durakbasa MO, Gumussuyu G, Gungor M, Ermis MN |title=Distal humeral coronal plane fractures: management, complications and outcome |journal=J Shoulder Elbow Surg |volume=22 |issue=4 |pages=560–6 |date=April 2013 |pmid=22981357 |doi=10.1016/j.jse.2012.07.011 |url=}}</ref><ref name="pmid18374809">{{cite journal |vauthors=Pollock JW, Faber KJ, Athwal GS |title=Distal humerus fractures |journal=Orthop. Clin. North Am. |volume=39 |issue=2 |pages=187–200, vi |date=April 2008 |pmid=18374809 |doi=10.1016/j.ocl.2007.12.002 |url=}}</ref>==
=== Natural History <ref name="pmid16148353">{{cite journal |vauthors=Anglen J |title=Distal humerus fractures |journal=J Am Acad Orthop Surg |volume=13 |issue=5 |pages=291–7 |date=September 2005 |pmid=16148353 |doi= |url=}}</ref>===
In cases with untreated [[Distal humerus fracture]] the malunion and deformity of arm can be occurred.
=== Complications <ref name="pmid23748579">{{cite journal |vauthors=Bukvić N, Kvesić A, Brekalo Z, Bosak A, Bukvić F, Karlo R |title=The problem of post-traumatic varization of the distal end of the humerus remaining after the recovery of a supracondylar fracture |journal=J Pediatr Orthop B |volume=22 |issue=4 |pages=372–5 |date=July 2013 |pmid=23748579 |doi=10.1097/BPB.0b013e328360f8df |url=}}</ref><ref name="pmid29052827">{{cite journal |vauthors=Han SH, Hong IT, Lee HJ, Lee SJ, Kim U, Kim DW |title=Primary exploration for radial nerve palsy associated with unstable closed humeral shaft fracture |journal=Ulus Travma Acil Cerrahi Derg |volume=23 |issue=5 |pages=405–409 |date=September 2017 |pmid=29052827 |doi=10.5505/tjtes.2017.26517 |url=}}</ref>===
The overall complication rate in the treatment of [[Humerus fracture]] were found in around 40% of cases:
# Neurovascular compromise: such as Ulna nerve damage
# Compartment syndrome
# Chronic disability of the DRUJ
# Physeal Injury
# Malunion of the radius
# Nonunion
# Infection
# Refracture following plate removal
# Posterior interosseois nerve (PIN) injury.
# Instability of the DRUJ
# Loss of Motion (Stiffness)
# Posttraumatic Arthritis
# Heterotopic Ossification
=== Prognosis <ref name="pmid28644121">{{cite journal |vauthors=Eglseder WA, Paryavi E |title=Intercondylar Fractures of the Distal Humerus in Patients Younger Than 20 Years: Capsulectomy Results |journal=J Surg Orthop Adv |volume=26 |issue=2 |pages=98–101 |date=Summer 2017 |pmid=28644121 |doi= |url=}}</ref>===
Successful treatment of [[Distal humerus fracture]] depends on the on-time interventions such as: reduction of the radius and DRUJ and the restoration of the forearm axis. The incidence of nonunion of [[Humerus fracture]] is very low. On the other hand, the rate of successful union following the open reduction of forearm fractures was reported around 98%. Loss of terminal extension is common among cases with the distal humerus fracture and the chronic exertional pain can be found in around 25% of patients with the distal humerus fracture.
==Diagnosis<ref name="pmid18374809">{{cite journal |vauthors=Pollock JW, Faber KJ, Athwal GS |title=Distal humerus fractures |journal=Orthop. Clin. North Am. |volume=39 |issue=2 |pages=187–200, vi |date=April 2008 |pmid=18374809 |doi=10.1016/j.ocl.2007.12.002 |url=}}</ref>==
The diagnosis of a  [[Distal humerus fracture]] should be confirmed using a radiographic examination.
==History and Symptoms <ref name="pmid18054673">{{cite journal |vauthors=Throckmorton TW, Zarkadas PC, Steinmann SP |title=Distal humerus fractures |journal=Hand Clin |volume=23 |issue=4 |pages=457–69, vi |date=November 2007 |pmid=18054673 |doi=10.1016/j.hcl.2007.09.001 |url=}}</ref><ref name="pmid23273377">{{cite journal |vauthors=Ducrot G, Ehlinger M, Adam P, Di Marco A, Clavert P, Bonnomet F |title=Complex fractures of the distal humerus in the elderly: is primary total elbow arthroplasty a valid treatment alternative? A series of 20 cases |journal=Orthop Traumatol Surg Res |volume=99 |issue=1 |pages=10–20 |date=February 2013 |pmid=23273377 |doi=10.1016/j.otsr.2012.10.010 |url=}}</ref><ref name="pmid25661293">{{cite journal |vauthors=Sela Y, Baratz ME |title=Distal humerus fractures in the elderly population |journal=J Hand Surg Am |volume=40 |issue=3 |pages=599–601 |date=March 2015 |pmid=25661293 |doi=10.1016/j.jhsa.2014.12.011 |url=}}</ref>==
The related signs and symptoms include:
* Skin lacerations
* Weak pulse
* Open fractures
* Bruising
* Swelling
* Stiffness
* Inability to move
* Pain in touch
* Loss of function of the forearm
* Difficulties in detection of pulses
* Radial nerve damage
In the physical exam the orthopedic surgeon should check the vascular status and amount of swelling in the forearm. In MULTI-trauma patients or in comatose or obtunded patients a tense compartment with neurological signs or stretch pain should be considered as the [[compartment syndrome]], and the compartment pressures should be measured and monitored. Normally the pain and soft-tissue swelling are found at the injury site (distal-third radial fracture site and at the wrist joint). This injury should be confirmed using a radiographic evaluations. Also, patients may loss the pinch mechanism between their thumb and their index finger which can be due to the paralysis of the flexor pollicis longus (FPL) and flexor digitorum profundus (FDP).
==Physical Examination<ref name="pmid19121746">{{cite journal |vauthors=Wong AS, Baratz ME |title=Elbow fractures: distal humerus |journal=J Hand Surg Am |volume=34 |issue=1 |pages=176–90 |date=January 2009 |pmid=19121746 |doi=10.1016/j.jhsa.2008.10.023 |url=}}</ref><ref name="pmid21471423">{{cite journal |vauthors=Nauth A, McKee MD, Ristevski B, Hall J, Schemitsch EH |title=Distal humeral fractures in adults |journal=J Bone Joint Surg Am |volume=93 |issue=7 |pages=686–700 |date=April 2011 |pmid=21471423 |doi=10.2106/JBJS.J.00845 |url=}}</ref>==
The related signs and symptoms include:
* Edema of the shoulder
** Most of the time the edema will be a non-pitting edema
** Depends on the edema extent, it may even lead to compartment syndrome in the anterior and internal compartment of shoulder
* Bruising
** As a manifestation of internal injury to the local vessels by trauma or fractures bone
* Decrease in range of motion
** Movement of the fractures limb will be painful if possible at all
* Tenderness
* Deformity
** Fractured bone deformity may be touchable in the internal side of the forearm if the fracture is displaced
In the physical exam the orthopedic surgeon should check the vascular status and amount of swelling in the forearm. In polytrauma patients or in comatose or obtunded patients a tense compartment with neurological signs or stretch pain should be considered as the [[compartment syndrome]], and the compartment pressures should be measured and monitored.
Physical examination of patients with  [[Distal humerus fracture]] is usually remarkable for [[swelling]], [[tenderness]], [[Bruise|bruises]], [[ecchymosis]], [[deformity]] and restricted [[range of motion]] of the [[wrist]].
=== Appearance of the Patient ===
* Patients with  [[Distal humerus fracture]]  usually appears normal unless the patients had a high energy trauma causing the open wound fracture.
=== Vital Signs ===
* [[Pulse|Weak pulse]] may be seen when associated with [[polytrauma]].
* [[Hypotension|Low blood pressure]] with normal [[pulse pressure]] may be present due to [[compound fracture]] with [[Bleeding|blood loss]].
=== Skin ===
* Skin examination of patients with [[Distal humerus fracture]]  includes:
** [[Bruise|Bruises]]
** [[Ecchymosis]]
=== HEENT ===
* HEENT examination of patients with [[Distal humerus fracture]]  usually normal.
=== Neck ===
* Neck examination of patients with [[Distal humerus fracture]] is usually normal
=== Lungs ===
* Pulmonary examination of patients with [[Distal humerus fracture]]  usually normal
=== Heart ===
* Cardiovascular examination of patients with [[Distal humerus fracture]]  usually normal
=== Abdomen ===
* Abdominal examination of patients with [[Distal humerus fracture]] usually normal
=== Back ===
* Back examination of patients with [[Distal humerus fracture]] usually normal
=== Genitourinary ===
* Genitourinary examination of patients with [[Distal humerus fracture]]  usually normal
=== Neuromuscular ===
* Neuromuscular examination of patients with  [[Distal humerus fracture]] is usually normal
* However, some patients may develop [[neuropraxia]] of the branch of the Ulnar nerve resulting in decreased sensation of thumb, index and middle finger.
==Laboratory Findings<ref name="pmid15633013">{{cite journal |vauthors=Rueger JM, Janssen A, Barvencik F, Briem D |title=[Fractures of the distal humerus] |language=German |journal=Unfallchirurg |volume=108 |issue=1 |pages=49–57; quiz 58 |date=January 2005 |pmid=15633013 |doi=10.1007/s00113-004-0905-9 |url=}}</ref>==
There is a limited laboratory tests useful in the diagnosis of bone fractures such as the [[Distal humerus fracture]]. Meanwhile, aged men and women may have some abnormalities in their laboratory findings suggestive of osteoporosis.
Laboratory tests for the diagnosis of osteoporosis are:
* Complete blood count (CBC)
* Serum total calcium level
* Serum Ionized calcium level
* Serum phosphate level
* Serum alkaline phosphatase level
* Serum 25-(OH)-vitamin D level
==X Ray <ref name="pmid27921119">{{cite journal |vauthors=Beeres FJ, Oehme F, Babst R |title=[Distal humerus fracture-extensile approaches] |language=German |journal=Oper Orthop Traumatol |volume=29 |issue=2 |pages=115–124 |date=April 2017 |pmid=27921119 |doi=10.1007/s00064-016-0474-4 |url=}}</ref><ref name="pmid27049206">{{cite journal |vauthors=Abzug J, Ho CA, Ritzman TF, Brighton B |title=Transphyseal Distal Humerus Fracture |journal=Instr Course Lect |volume=65 |issue= |pages=379–84 |date=2016 |pmid=27049206 |doi= |url=}}</ref>==
The orthopedic surgeon should consider to have at least two radiographic projections (ie, anteroposterior [AP] and lateral) of the forearm. These show the fracture, the extent of displacement, and the extent of comminution. The orthopedic surgeon should pay serious attention toward finding any foreign bodies in open fractures and gunshot injuries. Also imperative is to include the elbow and wrist joint in the radiographs of [[Humerus fracture]] to ensure that the distal radioulnar joint injuries are not missed.
<gallery perrow="3">
File:Supracondylar-fracture-grade-iiib (1).jpg| There is an obvious supracondylar fracture with posterior displacement of the distal fracture fragment and no communication between the cotices.
</gallery>
==CT <ref name="pmid24709303">{{cite journal |vauthors=Jacquot A, Poussange N, Charrissoux JL, Clavert P, Obert L, Pidhorz L, Sirveaux F, Mansat P, Fabre T |title=Usefulness and reliability of two- and three-dimensional computed tomography in patients older than 65 years with distal humerus fractures |journal=Orthop Traumatol Surg Res |volume=100 |issue=3 |pages=275–80 |date=May 2014 |pmid=24709303 |doi=10.1016/j.otsr.2014.01.003 |url=}}</ref><ref name="pmid26372759">{{cite journal |vauthors=Nolan BM, Sweet SJ, Ferkel E, Udofia AA, Itamura J |title=The Role of Computed Tomography in Evaluating Intra-Articular Distal Humerus Fractures |journal=Am J. Orthop. |volume=44 |issue=9 |pages=E326–30 |date=September 2015 |pmid=26372759 |doi= |url=}}</ref>==
* CT-scan in the case of  the [[Humerus fracture]]is the best modality if you can not have an exclusive diagnosis by X-ray itself can not be made.
<gallery perrow="3">
File:Capitellum-fracture (3).jpg| The oblique fracture through the capitellum is clearly demonstrated on the CT.
</gallery>
==MRI <ref name="pmid11832311">{{cite journal |vauthors=O'Driscoll SW, Sanchez-Sotelo J, Torchia ME |title=Management of the smashed distal humerus |journal=Orthop. Clin. North Am. |volume=33 |issue=1 |pages=19–33, vii |date=January 2002 |pmid=11832311 |doi= |url=}}</ref>==
* Magnetic resonance imaging (MRI) is an expensive technique that should not be used routinely.
* MRI is a powerful diagnostic tool to assess the abnormalities of the bone, ligaments and soft tissues associated with the [[Distal humerus fracture]], but it is known as a limited utility in radioulnar injuries and is not indicated in uncomplicated forearm fractures.
* Meanwhile, the MRI can be useful in in following mentioned evaluations:
* Evaluation of occult [[Bone fracture|fractures]]
* Evaluation of the post-traumatic or [[avascular necrosis]] of [[carpal bones]]
* Evaluation of [[tendons]]
* Evaluation of [[Median nerve|nerve]]
* Evaluation of [[carpal tunnel syndrome]]
==Other Imaging Findings<ref name="pmid27965047">{{cite journal |vauthors=Atalar AC, Tunalı O, Erşen A, Kapıcıoğlu M, Sağlam Y, Demirhan MS |title=Biomechanical comparison of orthogonal versus parallel double plating systems in intraarticular distal humerus fractures |journal=Acta Orthop Traumatol Turc |volume=51 |issue=1 |pages=23–28 |date=January 2017 |pmid=27965047 |pmc=6197297 |doi=10.1016/j.aott.2016.11.001 |url=}}</ref>==
There are no other imaging findings associated with [[Distal humerus fracture]]
==Other Diagnostic Studies<ref name="pmid27965047">{{cite journal |vauthors=Atalar AC, Tunalı O, Erşen A, Kapıcıoğlu M, Sağlam Y, Demirhan MS |title=Biomechanical comparison of orthogonal versus parallel double plating systems in intraarticular distal humerus fractures |journal=Acta Orthop Traumatol Turc |volume=51 |issue=1 |pages=23–28 |date=January 2017 |pmid=27965047 |pmc=6197297 |doi=10.1016/j.aott.2016.11.001 |url=}}</ref>==
There are no other Diagnostic studies associated with  [[Distal humerus fracture]]
==Treatment <ref name="pmid15726080">{{cite journal |vauthors=O'Driscoll SW |title=Optimizing stability in distal humeral fracture fixation |journal=J Shoulder Elbow Surg |volume=14 |issue=1 Suppl S |pages=186S–194S |date=2005 |pmid=15726080 |doi=10.1016/j.jse.2004.09.033 |url=}}</ref><ref name="pmid24184203">{{cite journal |vauthors=Pidhorz L, Alligand-Perrin P, De Keating E, Fabre T, Mansat P |title=Distal humerus fracture in the elderly: does conservative treatment still have a role? |journal=Orthop Traumatol Surg Res |volume=99 |issue=8 |pages=903–7 |date=December 2013 |pmid=24184203 |doi=10.1016/j.otsr.2013.10.001 |url=}}</ref><ref name="pmid25442772">{{cite journal |vauthors=Kozánek M, Bartoníček J, Chase SM, Jupiter JB |title=Treatment of distal humerus fractures in adults: a historical perspective |journal=J Hand Surg Am |volume=39 |issue=12 |pages=2481–5 |date=December 2014 |pmid=25442772 |doi=10.1016/j.jhsa.2014.08.003 |url=}}</ref><ref name="pmid26584799">{{cite journal |vauthors=Ring D, Jawa A, Cannada L |title=Clinical Faceoff: Are Distal-third Diaphyseal Humerus Fractures Best Treated Nonoperatively? |journal=Clin. Orthop. Relat. Res. |volume=474 |issue=2 |pages=310–4 |date=February 2016 |pmid=26584799 |pmc=4709285 |doi=10.1007/s11999-015-4636-8 |url=}}</ref>==
Immediate stabilization of patients is the first step. Then the radial fracture and the DRUJ stabilization is recommended in these cases. Open forearm fractures considered as a surgical emergency. [[Humerus fracture]] occurs in younger patients who are skeletally immature; the normally they treated using a closed reduction and casting. Since closed reduction and cast application have led to unsatisfactory results. Then, Almost always the open reduction are necessary for the [[Humerus fracture]]. There are controversies regarding the indications for intramedullary nailing of forearm fractures.
==Non-Operative Treatmen <ref name="pmid24184203">{{cite journal |vauthors=Pidhorz L, Alligand-Perrin P, De Keating E, Fabre T, Mansat P |title=Distal humerus fracture in the elderly: does conservative treatment still have a role? |journal=Orthop Traumatol Surg Res |volume=99 |issue=8 |pages=903–7 |date=December 2013 |pmid=24184203 |doi=10.1016/j.otsr.2013.10.001 |url=}}</ref><ref name="pmid26584799">{{cite journal |vauthors=Ring D, Jawa A, Cannada L |title=Clinical Faceoff: Are Distal-third Diaphyseal Humerus Fractures Best Treated Nonoperatively? |journal=Clin. Orthop. Relat. Res. |volume=474 |issue=2 |pages=310–4 |date=February 2016 |pmid=26584799 |pmc=4709285 |doi=10.1007/s11999-015-4636-8 |url=}}</ref>==
* The first step in managing a patient with a fracture is to stabilize the patient if he/she is unstable due to blood loss, etc by giving them intravenous fluids and giving them some painkillers if the pain is severe.
* In children, the usual plan is to attempt closed reduction followed by cast immobilization. In adults, treatment with immobilization in a molded long arm cast can be used in those rare occasions of a non-displaced fracture of both bones of the forearm. If the fracture shifts in position, it may require surgery to put the bones back together.
* Rigid immobilization is suggested in preference to removable splints in nonoperative treatment for the management of the [[Distal humerus fracture]]
* For all patients with [[Humerus fracture]], a post-reduction true lateral [[Radiography|radiograph]] is suggested .
* Operative fixation is suggested in preference to [[Orthopedic cast|cast]] fixation for fractures with post-reduction radial [[shortening]] greater than 3 mm, dorsal tilt greater than 10º, or intra-articular displacement or step-off greater than 2 mm.
* Patients probably do not need to begin early wrist motion routinely after stable [[Bone fracture|fracture]] fixation.
* Adjuvant treatment of [[Distal humerus fracture]] with vitamin C is suggested for the prevention of disproportionate [[pain]]
* The medial epicondylar fractures should be immobilized for 7 days with patients elbow flexed at 90º, with the pronated forearm , and the flexed wrist at 30º for relaxing the common flexor-pronator muscle group. If more than 3 mm of displacement is present or the fragment is trapped in the medial joint, attempts at closed reduction often fail, and ORIF is necessary.
* Lateral epicondylar fractures should be immobilized for 7 days with patients elbow flexed at 90º, with the supinated forearm , and the extended wrist for relaxing the extensor muscles.
=== Complications of Non-surgical therapy ===
Failure of non-surgical therapy is common:
* Re-displacement to its original position even in a cast
* [[Stiffness]]
* Post traumatic [[osteoarthritis]] leading to wrist pain and loss of function
* Other risks specific to cast treatment include:
** Compression of the swollen arm causing [[compartment syndrome]]
** [[Reflex sympathetic dystrophy]] is a serious complication
** Stiffness is universal following a prolonged period of immobilization and swelling
==Surgery <ref name="pmid21162702">{{cite journal |vauthors=Min W, Anwar A, Ding BC, Tejwani NC |title=Open distal humerus fractures--review of the literature |journal=Bull NYU Hosp Jt Dis |volume=68 |issue=4 |pages=257–61 |date=2010 |pmid=21162702 |doi= |url=}}</ref><ref name="pmid21881883">{{cite journal |vauthors=Kamrani RS, Mehrpour SR, Aghamirsalim MR, Sorbi R, Zargar Bashi R, Kaya A |title=Pin and plate fixation in complex distal humerus fractures: surgical technique and results |journal=Int Orthop |volume=36 |issue=4 |pages=839–44 |date=April 2012 |pmid=21881883 |pmc=3311817 |doi=10.1007/s00264-011-1343-2 |url=}}</ref><ref name="pmid28752182">{{cite journal |vauthors=Biz C, Sperotto SP, Maschio N, Borella M, Iacobellis C, Ruggieri P |title=The challenging surgical treatment of closed distal humerus fractures in elderly and octogenarian patients: radiographic and functional outcomes with a minimum follow-up of 24 months |journal=Arch Orthop Trauma Surg |volume=137 |issue=10 |pages=1371–1383 |date=October 2017 |pmid=28752182 |doi=10.1007/s00402-017-2762-3 |url=}}</ref><ref name="pmid26498548">{{cite journal |vauthors=Mighell MA, Stephens B, Stone GP, Cottrell BJ |title=Distal Humerus Fractures: Open Reduction Internal Fixation |journal=Hand Clin |volume=31 |issue=4 |pages=591–604 |date=November 2015 |pmid=26498548 |doi=10.1016/j.hcl.2015.06.007 |url=}}</ref><ref name="pmid26683504">{{cite journal |vauthors=Bell P, Scannell BP, Loeffler BJ, Brighton BK, Gaston RG, Casey V, Peters ME, Frick S, Cannada L, Vanderhave KL |title=Adolescent Distal Humerus Fractures: ORIF Versus CRPP |journal=J Pediatr Orthop |volume=37 |issue=8 |pages=511–520 |date=December 2017 |pmid=26683504 |doi=10.1097/BPO.0000000000000715 |url=}}</ref><ref name="pmid27441924">{{cite journal |vauthors=Fuller DA |title=Open Reduction, Internal Fixation Distal Intraarticular Distal Humerus Fracture |journal=J Orthop Trauma |volume=30 Suppl 2 |issue= |pages=S13–4 |date=August 2016 |pmid=27441924 |doi=10.1097/BOT.0000000000000584 |url=}}</ref>==
Returning to the normal physical activity after [[Distal humerus fracture]]can take weeks to months of therapy under supervision an orthopedist. Meanwhile, a physiotherapy can be helpful for patient to achieve the normal wrist and elbow function caused by the immobilisation. All adult [[Distal humerus fracture]] should be considered to be treated with open reduction and internal fixation (ORIF).
External fixation: For severe open fractures
Open reduction and internal fixation: For distal humerus fractures which depending on each patients condition the following may be needed:
Ulnar nerve placement
Bone grafting
Osteotomy
Arthrodesis
<gallery perrow="3">
File:Supracondylar-fracture-16.jpg| Internal fixation using two Kirschner wires laterally.
</gallery>
=== Operation <ref name="pmid25442772">{{cite journal |vauthors=Kozánek M, Bartoníček J, Chase SM, Jupiter JB |title=Treatment of distal humerus fractures in adults: a historical perspective |journal=J Hand Surg Am |volume=39 |issue=12 |pages=2481–5 |date=December 2014 |pmid=25442772 |doi=10.1016/j.jhsa.2014.08.003 |url=}}</ref>===
* There are a variety of methods and implants useful to stabilize the  [[Distal humerus fracture]], ranging from closed reduction and percutaneous pin fixation to the use of intra-medullary devices.
* However, the most common fixation methods to treat complex [[Distal humerus fracture]] include [[external fixation]], and open reduction and internal fixation.
=== External Fixation With or Without Percutaneous Pin Fixation ===
* [[Wrist]] spanning [[external fixation]] employs ligamentotaxis to restore and maintain length, alignment, and rotation of ulnar bone.
* Reduction is typically obtained through closed or minimally open methods and preserves the [[Bone fracture|fracture]] biology.
* The addition of percutaneous pins enhances the ability to reduce and stabilize fracture fragments.
==== Complications of External Fixation ====
* Pin tract [[infection]]
* Injury to the [[Superficial branch of the radial nerve|superficial branch of the nerve]]
* [[Complex regional pain syndrome]]
=== Open reduction and internal fixation with plates and screws ===
* This is the most common type of surgical repair for  [[Distal humerusfracture]]
* During this type of procedure, the bone fragments are first repositioned (reduced) into their normal alignment.
* The bones held together with special screws and metal plates attached to the outer surface of the bone.
==== Complications of open reduction and internal fixation with plates and screws =====
* Infection
* Damage to nerves and blood vessels
* Synostosis
* Nonunion
=== Pain Management ===
Pain after an injury or surgery is a natural part of the healing process.
Medications are often prescribed for short-term pain relief after surgery or an injurysuch as:
* opioids
* non-steroidal anti-inflammatory drugs (NSAIDs)
* local anesthetics
=== Be aware that although opioids help relieve pain after surgery or an injury, they are a narcotic and can be addictive.  It is important to use opioids only as directed by doctor. ===
=== Interventions<ref name="pmid26778627">{{cite journal |vauthors=Ayoub MA, Khalil AE, Seleem OA |title=Distal humerus fractures nonunion with elbow stiffness in working adults: Can triple tension band technique and Lambda Plate(®) be a standby solution? |journal=J Orthop Sci |volume=21 |issue=2 |pages=147–53 |date=March 2016 |pmid=26778627 |doi=10.1016/j.jos.2015.12.014 |url=}}</ref> ===
The following options can be helpful for patients to rehabilitate after their fracture :
* Joints mobilization
* compression bandage
* Soft tissue massage
* Exercises and Activity modification
* Forearm taping
* Forearm bracing
== Postoperative Rehabilitation <ref name="pmid15292788">{{cite journal |vauthors=Hausman M, Panozzo A |title=Treatment of distal humerus fractures in the elderly |journal=Clin. Orthop. Relat. Res. |volume= |issue=425 |pages=55–63 |date=August 2004 |pmid=15292788 |doi= |url=}}</ref><ref name="pmid26468927">{{cite journal |vauthors=Schmidt-Horlohé K, Hoffmann R |title=[Articular Fractures in the Elderly: to Fix or to Replace? - Distal Humerus] |language=German |journal=Z Orthop Unfall |volume=153 |issue=6 |pages=597–606 |date=December 2015 |pmid=26468927 |doi=10.1055/s-0035-1557809 |url=}}</ref><ref name="pmid26778627">{{cite journal |vauthors=Ayoub MA, Khalil AE, Seleem OA |title=Distal humerus fractures nonunion with elbow stiffness in working adults: Can triple tension band technique and Lambda Plate(®) be a standby solution? |journal=J Orthop Sci |volume=21 |issue=2 |pages=147–53 |date=March 2016 |pmid=26778627 |doi=10.1016/j.jos.2015.12.014 |url=}}</ref>==
* Complex  [[Humerus fracture]] warrant individualized immobilization and rehabilitation strategies.
* Similarly, the addition of a thumb spica [[Orthopedic cast|cast]] or [[orthosis]] with positioning of the [[wrist]] in slight ulnar deviation for management of a [[comminuted]] radial column fracture may prevent loss of reduction. *Because most multifragmentary [[Humerus fracture]] are the result of high-energy injuries, a prolonged period of [[wrist]] immobilization and [[Soft tissue|soft-tissue]] rest may be beneficial and has not been shown to affect clinical outcomes.
* The [[wrist]] is typically immobilized for 2 weeks post-operatively in a sugar tong [[Splint (medicine)|splint]] with neutral forearm rotation.
* At 6 weeks post-operatively, the wrist is placed into a removable orthosis, and active and passive range of motion (ROM) is initiated.
* Full weight bearing commences at approximately 3 months post-operatively after consolidation of the [[Bone fracture|fracture]] is noted on radiographs.
* The presence of varying degrees of [[hand]], [[wrist]], and [[elbow]] [[stiffness]] is inevitable and may result from poor [[pain]] control, lack of effort in controlled mobilization, [[edema]], concomitant ipsilateral [[Upper limb|upper extremity]] [[Bone fracture|fracture]]<nowiki/>s, or [[Peripheral nervous system|peripheral nerve]] injuries.
* Early stretching and mobilization of the intrinsic and extrinsic [[Tendon|tendons]] of the [[hand]] is important to prevent finger [[stiffness]].
* [[Edema]] control can be initiated with compression gloves, digital massage, and active and passive ROM of the [[hand]].
* A home [[Physical exercise|exercise]] program or outpatient occupational therapy is started immediately post-operatively to maintain full [[range of motion]] of the [[hand]] and limit the development of intrinsic muscle tightness
==Primary Prevention<ref name="pmid25661293">{{cite journal |vauthors=Sela Y, Baratz ME |title=Distal humerus fractures in the elderly population |journal=J Hand Surg Am |volume=40 |issue=3 |pages=599–601 |date=March 2015 |pmid=25661293 |doi=10.1016/j.jhsa.2014.12.011 |url=}}</ref>==
There are various preventive options to reduce the incidence of the [[Humerus fracture]]
# Using forearm and wrist guards during practicing sports (skating, biking)
# Using forearm and wrist guards during driving motorbikes
# Avoid falls in elderly individuals
# Prevention and/or treatment of osteoporosis
# Healthy diet
==Secondary Prevention<ref name="pmid15517186">{{cite journal |vauthors=Korner J, Lill H, Müller LP, Hessmann M, Kopf K, Goldhahn J, Gonschorek O, Josten C, Rommens PM |title=Distal humerus fractures in elderly patients: results after open reduction and internal fixation |journal=Osteoporos Int |volume=16 Suppl 2 |issue= |pages=S73–9 |date=March 2005 |pmid=15517186 |doi=10.1007/s00198-004-1764-5 |url=}}</ref>==
It should be noted that the Post-menopausal women specially older than the age of 65 are at the higher risk of [[osteoporosis]] consequently these type of patients at greater risk for the pathological [[Bone fracture|fractures]] .
So the [[Calcium]] and [[vitamin D]] supplementation play important role in increasing the [[Bone mineral density|bone mineral density (BMD]]) consequently decrease the risk of fracture in these type of patients. Also, avoiding excessive [[alcohol]] and quitting [[smoking]] play important role in this regard.
=== Detecting osteoporosis<ref name="pmid20135123">{{cite journal |vauthors=Burg A, Berenstein M, Engel J, Luria T, Salai M, Dudkiewicz I, Velkes S |title=Fractures of the distal humerus in elderly patients treated with a ring fixator |journal=Int Orthop |volume=35 |issue=1 |pages=101–6 |date=January 2011 |pmid=20135123 |pmc=3014495 |doi=10.1007/s00264-009-0938-3 |url=}}</ref>===
* [[Dual energy X-ray absorptiometry|DEXA]](dual-energy x-ray absorptiometry) scan
* Serum [[calcium]] and [[vitamin D]] levels
* [[Medical ultrasonography|Ultrasonography]] of the [[calcaneus]]
=== Pharmacological therapy <ref name="pmid17723787">{{cite journal |vauthors=Strauss EJ, Alaia M, Egol KA |title=Management of distal humeral fractures in the elderly |journal=Injury |volume=38 Suppl 3 |issue= |pages=S10–6 |date=September 2007 |pmid=17723787 |doi=10.1016/j.injury.2007.08.006 |url=}}</ref>===
* The primary goal for the treatment of [[osteoporosis]] is to reduce longtime [[fracture]] risk in patients. Increasing [[Bone mineral density|bone mineral density (BMD)]] in response to the treatment is far less important than improvement of clinical aspects of [[osteoporosis]], i.e., [[Osteoporosis|osteoporotic]][[Bone fracture|fracture]]. Therefore, most of the [[drugs]] efficacy is measured by the extent they improve the [[fracture]] risk instead of increasing [[Bone mineral density|BMD]].
* During the treatment, if a single [[fracture]] happens, it does not necessarily indicate treatment failure or the need to be started on an alternative treatment or patient referral to a [[specialist]].
* [[Calcium]] and [[vitamin D]] supplementation have been found to be effective in reducing the long term [[Bone fracture|fracture]] risk, significantly. In order to suggest the people to use [[vitamin D]] and [[calcium]] [[supplements]], the [[physician]] needs to make sure that patient is not able to obtain the [[nutrients]] through the daily intake. The available supplemental ions of [[calcium]] include [[calcium carbonate]], [[Calcium citrate|calcium citrate,]] and [[vitamin D3]] in various [[Dosage form|dosage forms]].
=== Life style modifications<ref name="pmid10077805">{{cite journal |vauthors=Ring D, Jupiter JB |title=Complex fractures of the distal humerus and their complications |journal=J Shoulder Elbow Surg |volume=8 |issue=1 |pages=85–97 |date=1999 |pmid=10077805 |doi= |url=}}</ref><ref name="pmid18374809">{{cite journal |vauthors=Pollock JW, Faber KJ, Athwal GS |title=Distal humerus fractures |journal=Orthop. Clin. North Am. |volume=39 |issue=2 |pages=187–200, vi |date=April 2008 |pmid=18374809 |doi=10.1016/j.ocl.2007.12.002 |url=}}</ref>===
* [[Exercise]]: Exercise promotes the [[mineralization]] of [[bone]] and [[bone]] accumulation particularly during growth. High impact exercise, in particular, has been shown to prevent the development of [[osteoporosis]]. However, it can have a negative effect on bone [[mineralization]] in cases of poor [[nutrition]], such as [[anorexia nervosa]] and [[celiac disease]].
* [[Nutrition]]: A [[diet]] high in [[calcium]] and [[vitamin D]] prevents [[bone loss]]. Patients at risk for [[osteoporosis]], such as persons with chronic [[steroid]] use are generally treated with [[vitamin D]] and [[calcium]] supplementation. In [[Kidney|renal]] disease, more active forms of [[vitamin D]], such as 1,25-dihydroxycholecalciferol or [[calcitriol]] are used; as the kidney cannot adequately generate [[calcitriol]] from [[calcidiol]] (25-hydroxycholecalciferol), which is the storage form of [[vitamin D]].
* By quitting [[smoking]], [[osteoporosis]] as well as other diseases can be prevented.
* Avoiding excessive [[alcohol]] intake or drinking only in moderation.
{{Fractures}}
[[Category:Needs content]]
[[Category:Disease]]
[[Category:Orthopedics]]
[[Category:Radiology]]
[[Category:Primary care]]
{{WH}}
{{WS}}
==See also==
*[[Proximal humerus fracture]]
*[[Jupiter and Mehne Classification]]
*[[Riseborough_and_Radin_classification]]
*[[Gartland_classification]]
*[[Distal humerus fracture]]
*[[Humeral_shaft_fracture]]
*[[Humerus fracture]]
==References==
<references />
__NOTOC__
__NOTOC__
{{SI}}
{{SI}}

Revision as of 20:08, 28 April 2019


Avulsion fracture
ICD-10 S42.2-S42.4
ICD-9 812
eMedicine emerg/199  orthoped/271 orthoped/199

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohammadmain Rezazadehsaatlou[2].

Overview[1][2]

The injuries of the ball-and-socket shoulder joint considered as the Distal humerus fracture. It is more common among the elderly population following a low energy trauma such as falling. Meanwhile, A few people experience the axillary nerve damage such as reduced sensation around the middle deltoid and/or axillary artery involvement.

Historical Perspective

There are no reliable information regarding the historical perspective of the hip bone fracture.

Causes[3][4]

The main etiology of the Distal humerus fracture is thought to be an axial loading may be placed on a hyperpronated forearm during falling onto an outstretched hand (FOOSH) with an extended wrist and hyperpronated forearm and shoulder. Because at this posture the energy from the radius fracture transmitted towards the shoulder joint cause the fracture and/or dislocation of the humerus bone.

Pathophysiology [5][6][7][8]

Mechanism

The Distal humerus fracture is caused by a fall on the outstretched hands. The form and severity of this fracture depends on the position of the shoulder joint at the moment of hitting the ground. The width of this mentioned angle affects the localization of the fracture. Pronation, supination and abduction positions leads the direction of the force and the compression of carpus and different appearances of injury.

Pathophysiology

Its known that the Distal humerus fracture in normal healthy adults can be caused due to the high-energy trauma (e.g., motor vehicle accidents), sport related injuries, falling from height. But it should be noted that the most important Risk factors for insufficiency fractures is chronic metabolic disease such as steoporosis, osteopenia, eating-disordered behavior, higher age, prolonged corticosteroid usage, female gender, lower BMI, history of a recent falling, and prior fracture.

  • The pattern of bone fracture and severity of injury depends on variety of factors such as:
    • Patients age
    • Patients Weight
    • Patients past medical history specifically any bone diseases affecting the quality of bone (such as osteoporosis, malignancies)
    • Energy of trauma
    • Bone quality
    • Position of the specific organ during the trauma
  • The below-mentioned processes cause decreased bone mass density:

Differentiating Distal humerus fracture from other Diseases[9][10]

In the orthopedic medicine its important to know that the forearm fracture should be evaluated using radiography for both confirming diagnosis and also for evaluating the surrounding tissues. Other injuries such as possible shoulder fracture-dislocation; radial head or coronoid fractures or lateral collateral ligament injury. If the mechanism of injury suggests particularly low energy then the Osteoporosis should be considered. The pathological Fractures occurring in a bone with a tumor or Paget's disease) are rare but possible[3]. Also it should be noted that the both bone fractures can be complicated by acute compartment syndrome of the forearm. Signs suggesting compartment syndrome are pain on extension of digits, and marked edema[3]. As another important fact in orthopedic fracture is if both-bone fractures were found in pediatric which is common after accidental trauma, but it may also be the due to the of child abuse; and in these cases a careful attention and evaluation should be considered if a child abuse is suspected Differential Diagnoses for the Distal humerus fracture:

  • Elbow Fracture
  • Elbow Dislocation

Epidemiology and Demographics [11][12]

The elbow joint fractures count for 4.3% of all fractures. Meanwhile, the distal humerus fractures account for 2% of all fractures. Also, it count as 30% the elbow fracture. both medial and lateral columns are usually involved in distal humerus fractures. Comparing to epidemiological data of the Japan and European countries, the incidence rates of humerus fractures are higher in the United states population.

Risk Factors [13]

There are different risk factors that presidpose patient for the Distal humerus fracture that include:

  • High-risk contact sports
  • Higher age (elderly adults are higher prone to such fractures)
  • Reduced bone density (osteoporosis)
  • Direct blow
  • Road / traffic accidents
  • Falling on an outstretched hand with the forearm pronated
  • Direct trauma to the arm/forearm
  • Taking part in any rough or high-impact sport
  • Street fights, gunshot wounds, and domestic violence, may also cause the Humerus fracture
  • Road traffic accidents.

Classification [14][15][16][17][18][19][20]

The distal humerus fracture may be classified based on the exact location of fracture:


Screening[21]

Osteoporosis is an important risk factor for human affecting human bone especially in men with the age of older than 50 years old and postmenopausal and women.

Based on the US Preventive Services Task Force (USPSTF) there are three groups of patients need to be screened for the osteoporosis:

  • ·       Men with no history of osteoporosis
  • ·       Women with the age of 65≤ year old, with no previous history of pathological fracture due to the osteoporosis
  • ·       Women with the age of <65 years, with 10-year fracture risk of not less than a 65-year-old white woman (who has not any other risk factor)

Accordingly women older than age of 50 are the main target for the osteoporosis screening. There is no specific recommendation to screen men for the osteoporosis.[1]

The USPSTF recommendations from 2002 included:

Meanwhile, there are two major modalities for the osteoporosis screening:

  1. ·       Dual energy x-ray absorptiometry (DXA) of the hip and lumbar spine bones
  2. ·       Quantitative ultrasonography of the calcaneus

*It should be noted of the two above mentioned modalities for screening the ultrasonograhy is preferred to the DXA due to its lower cost, lower ionizing radiation, more availability.

After the primary evaluation of the osteoporosis, the further evaluation are required in some cases such as:

·       Women with normal bone density or mild osteopenia: T-score of greater than −1.50 – should have screening for 15 years.

·       Women with moderate osteopenia: T-score of −1.50 to −1.99 – should have screening for 5 years.

·       Women with advanced osteopenia: T-score of −2.00 to −2.49 - should have screening for 1 year.

Natural History, Complications and Prognosis [22][23]

Natural History [24]

In cases with untreated Distal humerus fracture the malunion and deformity of arm can be occurred.

Complications [25][26]

The overall complication rate in the treatment of Humerus fracture were found in around 40% of cases:

  1. Neurovascular compromise: such as Ulna nerve damage
  2. Compartment syndrome
  3. Chronic disability of the DRUJ
  4. Physeal Injury
  5. Malunion of the radius
  6. Nonunion
  7. Infection
  8. Refracture following plate removal
  9. Posterior interosseois nerve (PIN) injury.
  10. Instability of the DRUJ
  11. Loss of Motion (Stiffness)
  12. Posttraumatic Arthritis
  13. Heterotopic Ossification

Prognosis [20]

Successful treatment of Distal humerus fracture depends on the on-time interventions such as: reduction of the radius and DRUJ and the restoration of the forearm axis. The incidence of nonunion of Humerus fracture is very low. On the other hand, the rate of successful union following the open reduction of forearm fractures was reported around 98%. Loss of terminal extension is common among cases with the distal humerus fracture and the chronic exertional pain can be found in around 25% of patients with the distal humerus fracture.

Diagnosis[23]

The diagnosis of a Distal humerus fracture should be confirmed using a radiographic examination.

History and Symptoms [27][28][29]

The related signs and symptoms include:

  • Skin lacerations
  • Weak pulse
  • Open fractures
  • Bruising
  • Swelling
  • Stiffness
  • Inability to move
  • Pain in touch
  • Loss of function of the forearm
  • Difficulties in detection of pulses
  • Radial nerve damage

In the physical exam the orthopedic surgeon should check the vascular status and amount of swelling in the forearm. In MULTI-trauma patients or in comatose or obtunded patients a tense compartment with neurological signs or stretch pain should be considered as the compartment syndrome, and the compartment pressures should be measured and monitored. Normally the pain and soft-tissue swelling are found at the injury site (distal-third radial fracture site and at the wrist joint). This injury should be confirmed using a radiographic evaluations. Also, patients may loss the pinch mechanism between their thumb and their index finger which can be due to the paralysis of the flexor pollicis longus (FPL) and flexor digitorum profundus (FDP).

Physical Examination[30][31]

The related signs and symptoms include:

  • Edema of the shoulder
    • Most of the time the edema will be a non-pitting edema
    • Depends on the edema extent, it may even lead to compartment syndrome in the anterior and internal compartment of shoulder
  • Bruising
    • As a manifestation of internal injury to the local vessels by trauma or fractures bone
  • Decrease in range of motion
    • Movement of the fractures limb will be painful if possible at all
  • Tenderness
  • Deformity
    • Fractured bone deformity may be touchable in the internal side of the forearm if the fracture is displaced

In the physical exam the orthopedic surgeon should check the vascular status and amount of swelling in the forearm. In polytrauma patients or in comatose or obtunded patients a tense compartment with neurological signs or stretch pain should be considered as the compartment syndrome, and the compartment pressures should be measured and monitored.

Physical examination of patients with Distal humerus fracture is usually remarkable for swelling, tenderness, bruises, ecchymosis, deformity and restricted range of motion of the wrist.

Appearance of the Patient

  • Patients with Distal humerus fracture usually appears normal unless the patients had a high energy trauma causing the open wound fracture.

Vital Signs

Skin

HEENT

Neck

Lungs

Heart

Abdomen

Back

Genitourinary

Neuromuscular

  • Neuromuscular examination of patients with Distal humerus fracture is usually normal
  • However, some patients may develop neuropraxia of the branch of the Ulnar nerve resulting in decreased sensation of thumb, index and middle finger.

Laboratory Findings[32]

There is a limited laboratory tests useful in the diagnosis of bone fractures such as the Distal humerus fracture. Meanwhile, aged men and women may have some abnormalities in their laboratory findings suggestive of osteoporosis.

Laboratory tests for the diagnosis of osteoporosis are:

  • Complete blood count (CBC)
  • Serum total calcium level
  • Serum Ionized calcium level
  • Serum phosphate level
  • Serum alkaline phosphatase level
  • Serum 25-(OH)-vitamin D level

X Ray [1][18]

The orthopedic surgeon should consider to have at least two radiographic projections (ie, anteroposterior [AP] and lateral) of the forearm. These show the fracture, the extent of displacement, and the extent of comminution. The orthopedic surgeon should pay serious attention toward finding any foreign bodies in open fractures and gunshot injuries. Also imperative is to include the elbow and wrist joint in the radiographs of Humerus fracture to ensure that the distal radioulnar joint injuries are not missed.

  • There is an obvious supracondylar fracture with posterior displacement of the distal fracture fragment and no communication between the cotices.

    There is an obvious supracondylar fracture with posterior displacement of the distal fracture fragment and no communication between the cotices.

CT [33][34]

  • CT-scan in the case of the Humerus fractureis the best modality if you can not have an exclusive diagnosis by X-ray itself can not be made.
  • The oblique fracture through the capitellum is clearly demonstrated on the CT.

    The oblique fracture through the capitellum is clearly demonstrated on the CT.

MRI [35]

  • Magnetic resonance imaging (MRI) is an expensive technique that should not be used routinely.
  • MRI is a powerful diagnostic tool to assess the abnormalities of the bone, ligaments and soft tissues associated with the Distal humerus fracture, but it is known as a limited utility in radioulnar injuries and is not indicated in uncomplicated forearm fractures.
  • Meanwhile, the MRI can be useful in in following mentioned evaluations:
  • Evaluation of occult fractures
  • Evaluation of the post-traumatic or avascular necrosis of carpal bones
  • Evaluation of tendons
  • Evaluation of nerve
  • Evaluation of carpal tunnel syndrome

Other Imaging Findings[19]

There are no other imaging findings associated with Distal humerus fracture

Other Diagnostic Studies[19]

There are no other Diagnostic studies associated with Distal humerus fracture

Treatment [36][37][38][39]

Immediate stabilization of patients is the first step. Then the radial fracture and the DRUJ stabilization is recommended in these cases. Open forearm fractures considered as a surgical emergency. Humerus fracture occurs in younger patients who are skeletally immature; the normally they treated using a closed reduction and casting. Since closed reduction and cast application have led to unsatisfactory results. Then, Almost always the open reduction are necessary for the Humerus fracture. There are controversies regarding the indications for intramedullary nailing of forearm fractures.

Non-Operative Treatmen [37][39]

  • The first step in managing a patient with a fracture is to stabilize the patient if he/she is unstable due to blood loss, etc by giving them intravenous fluids and giving them some painkillers if the pain is severe.
  • In children, the usual plan is to attempt closed reduction followed by cast immobilization. In adults, treatment with immobilization in a molded long arm cast can be used in those rare occasions of a non-displaced fracture of both bones of the forearm. If the fracture shifts in position, it may require surgery to put the bones back together.
  • Rigid immobilization is suggested in preference to removable splints in nonoperative treatment for the management of the Distal humerus fracture
  • For all patients with Humerus fracture, a post-reduction true lateral radiograph is suggested .
  • Operative fixation is suggested in preference to cast fixation for fractures with post-reduction radial shortening greater than 3 mm, dorsal tilt greater than 10º, or intra-articular displacement or step-off greater than 2 mm.
  • Patients probably do not need to begin early wrist motion routinely after stable fracture fixation.
  • Adjuvant treatment of Distal humerus fracture with vitamin C is suggested for the prevention of disproportionate pain
  • The medial epicondylar fractures should be immobilized for 7 days with patients elbow flexed at 90º, with the pronated forearm , and the flexed wrist at 30º for relaxing the common flexor-pronator muscle group. If more than 3 mm of displacement is present or the fragment is trapped in the medial joint, attempts at closed reduction often fail, and ORIF is necessary.
  • Lateral epicondylar fractures should be immobilized for 7 days with patients elbow flexed at 90º, with the supinated forearm , and the extended wrist for relaxing the extensor muscles.

Complications of Non-surgical therapy

Failure of non-surgical therapy is common:

  • Re-displacement to its original position even in a cast
  • Stiffness
  • Post traumatic osteoarthritis leading to wrist pain and loss of function
  • Other risks specific to cast treatment include:

Surgery [40][41][42][43][44][45]

Returning to the normal physical activity after Distal humerus fracturecan take weeks to months of therapy under supervision an orthopedist. Meanwhile, a physiotherapy can be helpful for patient to achieve the normal wrist and elbow function caused by the immobilisation. All adult Distal humerus fracture should be considered to be treated with open reduction and internal fixation (ORIF).

External fixation: For severe open fractures Open reduction and internal fixation: For distal humerus fractures which depending on each patients condition the following may be needed:

Ulnar nerve placement Bone grafting Osteotomy Arthrodesis

  • Internal fixation using two Kirschner wires laterally.

    Internal fixation using two Kirschner wires laterally.


Operation [38]

  • There are a variety of methods and implants useful to stabilize the Distal humerus fracture, ranging from closed reduction and percutaneous pin fixation to the use of intra-medullary devices.
  • However, the most common fixation methods to treat complex Distal humerus fracture include external fixation, and open reduction and internal fixation.

External Fixation With or Without Percutaneous Pin Fixation

  • Wrist spanning external fixation employs ligamentotaxis to restore and maintain length, alignment, and rotation of ulnar bone.
  • Reduction is typically obtained through closed or minimally open methods and preserves the fracture biology.
  • The addition of percutaneous pins enhances the ability to reduce and stabilize fracture fragments.

Complications of External Fixation

Open reduction and internal fixation with plates and screws

  • This is the most common type of surgical repair for Distal humerusfracture
  • During this type of procedure, the bone fragments are first repositioned (reduced) into their normal alignment.
  • The bones held together with special screws and metal plates attached to the outer surface of the bone.

Complications of open reduction and internal fixation with plates and screws =

  • Infection
  • Damage to nerves and blood vessels
  • Synostosis
  • Nonunion

Pain Management

Pain after an injury or surgery is a natural part of the healing process.

Medications are often prescribed for short-term pain relief after surgery or an injurysuch as:

  • opioids
  • non-steroidal anti-inflammatory drugs (NSAIDs)
  • local anesthetics

Be aware that although opioids help relieve pain after surgery or an injury, they are a narcotic and can be addictive.  It is important to use opioids only as directed by doctor.

Interventions[46]

The following options can be helpful for patients to rehabilitate after their fracture :

  • Joints mobilization
  • compression bandage
  • Soft tissue massage
  • Exercises and Activity modification
  • Forearm taping
  • Forearm bracing

Postoperative Rehabilitation [47][48][46]

  • Complex Humerus fracture warrant individualized immobilization and rehabilitation strategies.
  • Similarly, the addition of a thumb spica cast or orthosis with positioning of the wrist in slight ulnar deviation for management of a comminuted radial column fracture may prevent loss of reduction. *Because most multifragmentary Humerus fracture are the result of high-energy injuries, a prolonged period of wrist immobilization and soft-tissue rest may be beneficial and has not been shown to affect clinical outcomes.
  • The wrist is typically immobilized for 2 weeks post-operatively in a sugar tong splint with neutral forearm rotation.
  • At 6 weeks post-operatively, the wrist is placed into a removable orthosis, and active and passive range of motion (ROM) is initiated.
  • Full weight bearing commences at approximately 3 months post-operatively after consolidation of the fracture is noted on radiographs.
  • The presence of varying degrees of hand, wrist, and elbow stiffness is inevitable and may result from poor pain control, lack of effort in controlled mobilization, edema, concomitant ipsilateral upper extremity fractures, or peripheral nerve injuries.
  • Early stretching and mobilization of the intrinsic and extrinsic tendons of the hand is important to prevent finger stiffness.
  • Edema control can be initiated with compression gloves, digital massage, and active and passive ROM of the hand.
  • A home exercise program or outpatient occupational therapy is started immediately post-operatively to maintain full range of motion of the hand and limit the development of intrinsic muscle tightness

Primary Prevention[29]

There are various preventive options to reduce the incidence of the Humerus fracture

  1. Using forearm and wrist guards during practicing sports (skating, biking)
  2. Using forearm and wrist guards during driving motorbikes
  3. Avoid falls in elderly individuals
  4. Prevention and/or treatment of osteoporosis
  5. Healthy diet

Secondary Prevention[49]

It should be noted that the Post-menopausal women specially older than the age of 65 are at the higher risk of osteoporosis consequently these type of patients at greater risk for the pathological fractures .

So the Calcium and vitamin D supplementation play important role in increasing the bone mineral density (BMD) consequently decrease the risk of fracture in these type of patients. Also, avoiding excessive alcohol and quitting smoking play important role in this regard.

Detecting osteoporosis[50]

Pharmacological therapy [51]

Life style modifications[52][23]

Template:Fractures

Template:WH Template:WS

See also

References

  1. ↑ 1.0 1.1 Beeres FJ, Oehme F, Babst R (April 2017). "[Distal humerus fracture-extensile approaches]". Oper Orthop Traumatol (in German). 29 (2): 115–124. doi:10.1007/s00064-016-0474-4. PMID 27921119.
  2. ↑ Shearin JW, Chapman TR, Miller A, Ilyas AM (February 2018). "Ulnar Nerve Management with Distal Humerus Fracture Fixation: A Meta-Analysis". Hand Clin. 34 (1): 97–103. doi:10.1016/j.hcl.2017.09.010. PMID 29169602.
  3. ↑ Abzug JM, Ho CA, Ritzman TF, Brighton BK (February 2016). "Transphyseal Fracture of the Distal Humerus". J Am Acad Orthop Surg. 24 (2): e39–44. doi:10.5435/JAAOS-D-15-00297. PMID 26808044.
  4. ↑ Kay M, Simpkins C, Shipman P, Whitewood C (August 2017). "Diagnosing neonatal transphyseal fractures of the distal humerus". J Med Imaging Radiat Oncol. 61 (4): 494–499. doi:10.1111/1754-9485.12607. PMID 28345195.
  5. ↑ Supakul N, Hicks RA, Caltoum CB, Karmazyn B (February 2015). "Distal humeral epiphyseal separation in young children: an often-missed fracture-radiographic signs and ultrasound confirmatory diagnosis". AJR Am J Roentgenol. 204 (2): W192–8. doi:10.2214/AJR.14.12788. PMID 25615780.
  6. ↑ Antabak A, Andabak M, Barišić B, Papeš D, Romić I, Fuchs N, Luetić T (2016). "FRACTURE OF THE HUMERUS IN CHILDREN – CAUSES AND MECHANISMS OF INJURY". Lijec Vjesn. 138 (3–4): 74–8. PMID 30146852.
  7. ↑ Salvati S, Settembrini AM, Bissacco D, Dallatana R, Mazzaccaro D, Crippa C, Romano P, Settembrini P (October 2017). "Vascular Injury Due to Humerus Fracture in Pediatric Age: When the Treatment Is Mandatory". Ann Vasc Surg. 44: 420.e11–420.e15. doi:10.1016/j.avsg.2017.03.184. PMID 28479469.
  8. ↑ Pantalone A, Vanni D, Guelfi M, Belluati A, Salini V (October 2017). "Double plating for bicolumnar distal humerus fractures in the elderly". Injury. 48 Suppl 3: S20–S23. doi:10.1016/S0020-1383(17)30652-6. PMID 29025604.
  9. ↑ Maresca A, Pascarella R, Bettuzzi C, Amendola L, Politano R, Fantasia R, Del Torto M (February 2014). "Multifocal humeral fractures". Injury. 45 (2): 444–7. doi:10.1016/j.injury.2013.10.010. PMID 24183393.
  10. ↑ Jupiter JB, Mehne DK (July 1992). "Fractures of the distal humerus". Orthopedics. 15 (7): 825–33. PMID 1630966.
  11. ↑ Kim SH, Szabo RM, Marder RA (March 2012). "Epidemiology of humerus fractures in the United States: nationwide emergency department sample, 2008". Arthritis Care Res (Hoboken). 64 (3): 407–14. doi:10.1002/acr.21563. PMID 22162357.
  12. ↑ Charissoux JL, Vergnenegre G, Pelissier M, Fabre T, Mansat P (November 2013). "Epidemiology of distal humerus fractures in the elderly". Orthop Traumatol Surg Res. 99 (7): 765–9. doi:10.1016/j.otsr.2013.08.002. PMID 24075780.
  13. ↑ Rosado N, Ryznar E, Flaherty EG (November 2017). "Understanding humerus fractures in young children: Abuse or not abuse?". Child Abuse Negl. 73: 1–7. doi:10.1016/j.chiabu.2017.09.013. PMID 28938085.
  14. ↑ Brouwer KM, Guitton TG, Doornberg JN, Kloen P, Jupiter JB, Ring D (March 2009). "Fractures of the medial column of the distal humerus in adults". J Hand Surg Am. 34 (3): 439–45. doi:10.1016/j.jhsa.2008.11.022. PMID 19258140.
  15. ↑ Kuhn JE, Louis DS, Loder RT (April 1995). "Divergent single-column fractures of the distal part of the humerus". J Bone Joint Surg Am. 77 (4): 538–42. PMID 7713970.
  16. ↑ Ring D, Jupiter JB, Gulotta L (February 2003). "Articular fractures of the distal part of the humerus". J Bone Joint Surg Am. 85-A (2): 232–8. PMID 12571299.
  17. ↑ Miller AN, Beingessner DM (January 2013). "Intra-articular distal humerus fractures". Orthop. Clin. North Am. 44 (1): 35–45. doi:10.1016/j.ocl.2012.08.010. PMID 23174324.
  18. ↑ 18.0 18.1 Abzug J, Ho CA, Ritzman TF, Brighton B (2016). "Transphyseal Distal Humerus Fracture". Instr Course Lect. 65: 379–84. PMID 27049206.
  19. ↑ 19.0 19.1 19.2 Atalar AC, Tunalı O, Erşen A, Kapıcıoğlu M, Sağlam Y, Demirhan MS (January 2017). "Biomechanical comparison of orthogonal versus parallel double plating systems in intraarticular distal humerus fractures". Acta Orthop Traumatol Turc. 51 (1): 23–28. doi:10.1016/j.aott.2016.11.001. PMC 6197297. PMID 27965047.
  20. ↑ 20.0 20.1 Eglseder WA, Paryavi E (Summer 2017). "Intercondylar Fractures of the Distal Humerus in Patients Younger Than 20 Years: Capsulectomy Results". J Surg Orthop Adv. 26 (2): 98–101. PMID 28644121.
  21. ↑ Popovic D, King GJ (January 2012). "Fragility fractures of the distal humerus: What is the optimal treatment?". J Bone Joint Surg Br. 94 (1): 16–22. doi:10.1302/0301-620X.94B1.27820. PMID 22219241.
  22. ↑ Durakbasa MO, Gumussuyu G, Gungor M, Ermis MN (April 2013). "Distal humeral coronal plane fractures: management, complications and outcome". J Shoulder Elbow Surg. 22 (4): 560–6. doi:10.1016/j.jse.2012.07.011. PMID 22981357.
  23. ↑ 23.0 23.1 23.2 Pollock JW, Faber KJ, Athwal GS (April 2008). "Distal humerus fractures". Orthop. Clin. North Am. 39 (2): 187–200, vi. doi:10.1016/j.ocl.2007.12.002. PMID 18374809.
  24. ↑ Anglen J (September 2005). "Distal humerus fractures". J Am Acad Orthop Surg. 13 (5): 291–7. PMID 16148353.
  25. ↑ Bukvić N, Kvesić A, Brekalo Z, Bosak A, Bukvić F, Karlo R (July 2013). "The problem of post-traumatic varization of the distal end of the humerus remaining after the recovery of a supracondylar fracture". J Pediatr Orthop B. 22 (4): 372–5. doi:10.1097/BPB.0b013e328360f8df. PMID 23748579.
  26. ↑ Han SH, Hong IT, Lee HJ, Lee SJ, Kim U, Kim DW (September 2017). "Primary exploration for radial nerve palsy associated with unstable closed humeral shaft fracture". Ulus Travma Acil Cerrahi Derg. 23 (5): 405–409. doi:10.5505/tjtes.2017.26517. PMID 29052827.
  27. ↑ Throckmorton TW, Zarkadas PC, Steinmann SP (November 2007). "Distal humerus fractures". Hand Clin. 23 (4): 457–69, vi. doi:10.1016/j.hcl.2007.09.001. PMID 18054673.
  28. ↑ Ducrot G, Ehlinger M, Adam P, Di Marco A, Clavert P, Bonnomet F (February 2013). "Complex fractures of the distal humerus in the elderly: is primary total elbow arthroplasty a valid treatment alternative? A series of 20 cases". Orthop Traumatol Surg Res. 99 (1): 10–20. doi:10.1016/j.otsr.2012.10.010. PMID 23273377.
  29. ↑ 29.0 29.1 Sela Y, Baratz ME (March 2015). "Distal humerus fractures in the elderly population". J Hand Surg Am. 40 (3): 599–601. doi:10.1016/j.jhsa.2014.12.011. PMID 25661293.
  30. ↑ Wong AS, Baratz ME (January 2009). "Elbow fractures: distal humerus". J Hand Surg Am. 34 (1): 176–90. doi:10.1016/j.jhsa.2008.10.023. PMID 19121746.
  31. ↑ Nauth A, McKee MD, Ristevski B, Hall J, Schemitsch EH (April 2011). "Distal humeral fractures in adults". J Bone Joint Surg Am. 93 (7): 686–700. doi:10.2106/JBJS.J.00845. PMID 21471423.
  32. ↑ Rueger JM, Janssen A, Barvencik F, Briem D (January 2005). "[Fractures of the distal humerus]". Unfallchirurg (in German). 108 (1): 49–57, quiz 58. doi:10.1007/s00113-004-0905-9. PMID 15633013.
  33. ↑ Jacquot A, Poussange N, Charrissoux JL, Clavert P, Obert L, Pidhorz L, Sirveaux F, Mansat P, Fabre T (May 2014). "Usefulness and reliability of two- and three-dimensional computed tomography in patients older than 65 years with distal humerus fractures". Orthop Traumatol Surg Res. 100 (3): 275–80. doi:10.1016/j.otsr.2014.01.003. PMID 24709303.
  34. ↑ Nolan BM, Sweet SJ, Ferkel E, Udofia AA, Itamura J (September 2015). "The Role of Computed Tomography in Evaluating Intra-Articular Distal Humerus Fractures". Am J. Orthop. 44 (9): E326–30. PMID 26372759.
  35. ↑ O'Driscoll SW, Sanchez-Sotelo J, Torchia ME (January 2002). "Management of the smashed distal humerus". Orthop. Clin. North Am. 33 (1): 19–33, vii. PMID 11832311.
  36. ↑ O'Driscoll SW (2005). "Optimizing stability in distal humeral fracture fixation". J Shoulder Elbow Surg. 14 (1 Suppl S): 186S–194S. doi:10.1016/j.jse.2004.09.033. PMID 15726080.
  37. ↑ 37.0 37.1 Pidhorz L, Alligand-Perrin P, De Keating E, Fabre T, Mansat P (December 2013). "Distal humerus fracture in the elderly: does conservative treatment still have a role?". Orthop Traumatol Surg Res. 99 (8): 903–7. doi:10.1016/j.otsr.2013.10.001. PMID 24184203.
  38. ↑ 38.0 38.1 Kozánek M, Bartoníček J, Chase SM, Jupiter JB (December 2014). "Treatment of distal humerus fractures in adults: a historical perspective". J Hand Surg Am. 39 (12): 2481–5. doi:10.1016/j.jhsa.2014.08.003. PMID 25442772.
  39. ↑ 39.0 39.1 Ring D, Jawa A, Cannada L (February 2016). "Clinical Faceoff: Are Distal-third Diaphyseal Humerus Fractures Best Treated Nonoperatively?". Clin. Orthop. Relat. Res. 474 (2): 310–4. doi:10.1007/s11999-015-4636-8. PMC 4709285. PMID 26584799.
  40. ↑ Min W, Anwar A, Ding BC, Tejwani NC (2010). "Open distal humerus fractures--review of the literature". Bull NYU Hosp Jt Dis. 68 (4): 257–61. PMID 21162702.
  41. ↑ Kamrani RS, Mehrpour SR, Aghamirsalim MR, Sorbi R, Zargar Bashi R, Kaya A (April 2012). "Pin and plate fixation in complex distal humerus fractures: surgical technique and results". Int Orthop. 36 (4): 839–44. doi:10.1007/s00264-011-1343-2. PMC 3311817. PMID 21881883.
  42. ↑ Biz C, Sperotto SP, Maschio N, Borella M, Iacobellis C, Ruggieri P (October 2017). "The challenging surgical treatment of closed distal humerus fractures in elderly and octogenarian patients: radiographic and functional outcomes with a minimum follow-up of 24 months". Arch Orthop Trauma Surg. 137 (10): 1371–1383. doi:10.1007/s00402-017-2762-3. PMID 28752182.
  43. ↑ Mighell MA, Stephens B, Stone GP, Cottrell BJ (November 2015). "Distal Humerus Fractures: Open Reduction Internal Fixation". Hand Clin. 31 (4): 591–604. doi:10.1016/j.hcl.2015.06.007. PMID 26498548.
  44. ↑ Bell P, Scannell BP, Loeffler BJ, Brighton BK, Gaston RG, Casey V, Peters ME, Frick S, Cannada L, Vanderhave KL (December 2017). "Adolescent Distal Humerus Fractures: ORIF Versus CRPP". J Pediatr Orthop. 37 (8): 511–520. doi:10.1097/BPO.0000000000000715. PMID 26683504.
  45. ↑ Fuller DA (August 2016). "Open Reduction, Internal Fixation Distal Intraarticular Distal Humerus Fracture". J Orthop Trauma. 30 Suppl 2: S13–4. doi:10.1097/BOT.0000000000000584. PMID 27441924.
  46. ↑ 46.0 46.1 Ayoub MA, Khalil AE, Seleem OA (March 2016). "Distal humerus fractures nonunion with elbow stiffness in working adults: Can triple tension band technique and Lambda Plate(®) be a standby solution?". J Orthop Sci. 21 (2): 147–53. doi:10.1016/j.jos.2015.12.014. PMID 26778627.
  47. ↑ Hausman M, Panozzo A (August 2004). "Treatment of distal humerus fractures in the elderly". Clin. Orthop. Relat. Res. (425): 55–63. PMID 15292788.
  48. ↑ Schmidt-Horlohé K, Hoffmann R (December 2015). "[Articular Fractures in the Elderly: to Fix or to Replace? - Distal Humerus]". Z Orthop Unfall (in German). 153 (6): 597–606. doi:10.1055/s-0035-1557809. PMID 26468927.
  49. ↑ Korner J, Lill H, Müller LP, Hessmann M, Kopf K, Goldhahn J, Gonschorek O, Josten C, Rommens PM (March 2005). "Distal humerus fractures in elderly patients: results after open reduction and internal fixation". Osteoporos Int. 16 Suppl 2: S73–9. doi:10.1007/s00198-004-1764-5. PMID 15517186.
  50. ↑ Burg A, Berenstein M, Engel J, Luria T, Salai M, Dudkiewicz I, Velkes S (January 2011). "Fractures of the distal humerus in elderly patients treated with a ring fixator". Int Orthop. 35 (1): 101–6. doi:10.1007/s00264-009-0938-3. PMC 3014495. PMID 20135123.
  51. ↑ Strauss EJ, Alaia M, Egol KA (September 2007). "Management of distal humeral fractures in the elderly". Injury. 38 Suppl 3: S10–6. doi:10.1016/j.injury.2007.08.006. PMID 17723787.
  52. ↑ Ring D, Jupiter JB (1999). "Complex fractures of the distal humerus and their complications". J Shoulder Elbow Surg. 8 (1): 85–97. PMID 10077805.







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Overview

An avulsion fracture is a bone fracture which occurs when a fragment of bone tears away from the main mass of bone as a result of physical trauma. This can occur at the ligament due to the application forces external to the body (such as a fall or pull) or at the tendon due to a muscular contraction that is stronger than the forces holding the bone together. Generally muscular avulsion is prevented due to the neurological limitations placed on muscle contractions. Highly trained athletes can overcome this neurological inhibition of strength and produce a much greater force output capable of breaking or avulsing a bone.

If the fracture is small, it is usually sufficient to treat with rest and support bandage, but in more severe cases surgery may be required. Ice may be used to relieve swelling.

  • Schematic diagram of an avulsion fracture

    Schematic diagram of an avulsion fracture

  • Avulsion fracture off lunate bone

    Avulsion fracture off lunate bone

Avulsion fracture of anterior superior iliac spine


See also

References

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