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| | {{Bunion}} |
| | | {{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}} |
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| ==Overview==
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| A '''bunion''' ('''hallux valgus''') is a sometimes painful structural deformity of the bones and the [[joint]] between the foot and big toe.
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| A bunion is an enlargement of bone or tissue around the joint at the base of the big toe ([[metatarsophalangeal joint]]). The big toe may turn in toward the second toe (displacement), and the tissues surrounding the joint may be swollen and tender.
| | {{SK}} Hallux valgus |
| | ==[[Bunion overview|Overview]]== |
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| Today the term usually is used to refer to the pathological bump on the side of the great toe joint. The bump is the swollen bursal sac and/or an [[osseous]] (bony) deformity that has grown on the mesophalangeal joint (where the first metatarsal bone and [[hallux]] meet).
| | ==[[Bunion pathophysiology|Pathophysiology]]== |
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| ==Medical terms== | | ==[[Bunion causes|Causes]]== |
| The term "hallux valgus" or "hallux abducto valgus" are the most commonly-used medical terms associated with a bunion deformity, where "hallux" refers to the great toe, "[[valgus deformity|valgus]]" refers to the abnormal rotation of the great toe commonly associated with bunion deformities, and "abducto" refers to the abnormal drifting or inward leaning of the great toe towards the second toe, which is also commonly associated with bunion disorders.
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| ==Symptoms== | | ==[[Bunion differential diagnosis|Differentiating Bunion from other Diseases]]== |
| The symptoms of bunions include swelling of the [[metatarsophalangeal joint]], irritated skin around the bunion, joint redness and pain, and possible shift of the big toe toward the other toes.
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| ==Bunion formation/development== | | ==[[Bunion epidemiology and demographics|Epidemiology and Demographics]]== |
| Bunions are caused by a biomechanical abnormality, where certain [[tendon]]s, [[ligament]]s, and supportive structures of the first [[metatarsal]] are no longer functioning correctly. This biomechanical abnormality may be caused by a variety of conditions intrinsic to the structure of the foot--such as flat feet, excessive ligamentous flexibility, abnormal bone structure, and certain neurological conditions. These factors are often considered [[Genetics|genetic]].
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| Bunions are commonly associated with a deviated position of the big toe toward the second toe; and the deviation in the angle between the first and second metatarsal bones of the foot. The small [[sesamoid]] bones found beneath the first metatarsal (which help the flexor tendon bend the big toe downwards) may also become deviated over time as the first metatarsal bone drifts away from its normal position.
| | ==[[Bunion risk factors|Risk Factors]]== |
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| Arthritis of the great toe joint, diminished and/or altered range of motion, and discomfort with pressure applied to the bump or with motion of the joint, may all accompany bunion development.
| | ==[[Bunion natural history, complications and prognosis|Natural History, Complications and Prognosis]]== |
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| Although wearing shoes that crowd the toes does not cause bunions to form, it sometimes makes the existing deformity progressively worsen and symptoms may arise
| | ==Diagnosis== |
| sooner. [http://www.footphysicians.com/footankleinfo/bunions.htm]
| | [[Bunion history and symptoms|History and Symptoms]] | [[Bunion physical examination|Physical Examination]] | [[Bunion laboratory findings|Laboratory Findings]] | [[Bunion x ray|X Ray]] |
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| ==Treatment== | | ==Treatment== |
| Bunions may be treated conservatively with changes in shoe gear, different [[orthotics]] (accommodative padding and shielding), rest, ice, and medications. These sorts of treatments address symptoms more than they correct the actual deformity. Surgery may be necessary if discomfort is severe enough or when correction of the deformity is desired.
| | [[Bunion physical therapy|Physical Therapy]] | [[Bunion surgery|Surgery]] | [[Bunion cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Bunion future or investigational therapies|Future or Investigational Therapies]] |
| ===Surgery===
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| Procedures are designed and chosen to correct a variety of pathologies that may be associated with the bunion. For instance, procedures may address some combination of:
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| *removing the abnormal bony enlargement of the first [[metatarsal]],
| | ==Case Studies== |
| *realigning the first metatarsal bone relative to the adjacent metatarsal bone,
| | :[[Bunion case study one|Case #1]] |
| *straightening the great toe relative to the first metatarsal and adjacent toes,
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| *realigning the cartilagenous surfaces of the great toe joint,
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| *addressing [[arthritis|arthritic]] changes associated with the great toe joint,
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| *repositioning the [[sesamoid bones]] beneath the first metatarsal bone,
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| *shortening, lengthening, raising, or lowering the first metatarsal bone, and
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| *correcting any abnormal bowing or misalignment within the great toe.
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| The age, health, lifestyle, and activity level of the patient may also play a role in the choice of procedure.
| | ==Related Chapters== |
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| Bunion surgery can be performed under local, spinal, or general [[anesthetic]]. The trend has moved strongly towards using the less invasive [[local anesthesia]] over the years. A patient can expect a 6- to 8-week recovery period during which [[crutches]] are usually required for aid in mobility. It is much less common today as newer, more stable procedures and better forms of fixation (stabilizing the bone with screws and other hardware) are used.
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| ===Orthotics: bunion cushions, splints, regulators=== | |
| Other measures include various footwear like gelled toe spacers, bunion / toes separators, bunion regulators, bunion splints, and bunion cushions
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| ==See also==
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| *[[Foot]] | | *[[Foot]] |
| *[[Podiatry]] | | *[[Podiatry]] |
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| {{Diseases of the musculoskeletal system and connective tissue}} | | {{Diseases of the musculoskeletal system and connective tissue}} |
| {{SIB}}
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| [[Category:Foot]] | | [[Category:Foot]] |
| [[Category:Orthopedics]] | | [[Category:Orthopedics]] |
| | [[Category:Skeletal disorders]] |
| [[Category:Rheumatology]] | | [[Category:Rheumatology]] |
| | [[Category:Overview complete]] |
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