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Orthopaedics · Fracture complications: myositis ossificans
Sample itemAfter a severe elbow dislocation treated with vigorous passive stretching, a young man develops increasing stiffness and a hard mass in front of the elbow. Radiographs show a cloud of calcification weeks later. What is this?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Myositis ossificans of the brachialis
Myositis ossificans is heterotopic bone formation within muscle after trauma, commonly the brachialis after elbow injury. Passive stretching aggravates it, and treatment is rest and delayed excision once mature.
Option by option
A. Septic arthritis
Septic arthritis causes fever and joint effusion.
B. Osteosarcoma
Osteosarcoma lacks this injury relation and shows a different radiographic pattern.
C. Gout tophus
A gouty tophus does not occur in muscle after injury.
D. Myositis ossificans of the brachialis (correct)
Correct. Heterotopic ossification in the brachialis follows elbow injury and forceful stretching.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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