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Myositis ossificans — MSRA MCQ

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ModerateSoft Tissue InjuryMyositis ossificansMSRA

A 30-year-old footballer receives a direct blow to the quadriceps. Over the next week pain worsens, knee flexion reduces, and a firm tender mass develops. What is the most likely diagnosis?

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Correct answer: D — Myositis ossificans after quadriceps contusion

A worsening painful mass and loss of motion after muscle contusion suggests myositis ossificans. Aggressive early massage or heat may increase risk. Imaging can confirm maturation when diagnosis is uncertain.

Reference: Brukner & Khan; BJSM muscle injury