WBR0496: Difference between revisions
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(Created page with "{{WBRQuestion |QuestionAuthor=William J Gibson |ExamType=USMLE Step 1 |MainCategory=Anatomy |SubCategory=Musculoskeletal/Rheumatology, General Principles |MainCategory=Anatomy...") |
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|SubCategory=Musculoskeletal/Rheumatology, General Principles | |SubCategory=Musculoskeletal/Rheumatology, General Principles | ||
|Prompt=A 17 year old male is brought to the emergency room following trauma to his arm when he was struck with by another player during a lacrosse game. He reports 7/10 pain for which he took ibuprofen en route to the hospital. An X-ray of the arm is shown below. Which of the following is most likely impaired in this patient? | |Prompt=A 17 year old male is brought to the emergency room following trauma to his arm when he was struck with by another player during a lacrosse game. He reports 7/10 pain for which he took ibuprofen en route to the hospital. An X-ray of the arm is shown below. Which of the following is most likely impaired in this patient? | ||
|Explanation= | [[File:WBR0496.jpg| 400px| center]] | ||
|Explanation=The above image shows a mid-shaft fracture of the humerus. This injury is associated with radial nerve damage. The radial nerve is responsible for the innervating the extensors of the wrist. | |||
'''Educational Objective:''' The radial nerve is responsible for innervating the extensors of the wrist. The radial nerve is damaged by midshaft fractures of the humerus such as the one pictured above. | '''Educational Objective:''' The radial nerve is responsible for innervating the extensors of the wrist. The radial nerve is damaged by midshaft fractures of the humerus such as the one pictured above. | ||
'''References:''' First Aid 2012 page 409 | '''References:''' First Aid 2012 page 409 | ||
|AnswerA=Adduction of the thumb | |AnswerA=Adduction of the thumb |