Abstract:A 16-year-old, previously healthy boy, presented with an 11-month history of right popliteal fossa discomfort. This had been preceded by sudden pain in the posterior knee after falling while playing soccer. There was no effusion of the knee joint and no palpable mass. Sensory examination demonstrated no abnormalities, and deep tendon reflexes at the knee and ankle were normal and symmetric. He demonstrated mild weakness of toe flexion with normal strength of plantar flexion at the ankle. His gait was otherwise… Show more
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