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What is A college football player repos knee pain along the medial joint line with intermittent locking and inability to fully extend the knee after a twisting injury to his right knee. He has a negative Lachman test and a positive McMurray test. What is the most likely diagnosis and explain in detail?
The patient has a bucket-handle medial meniscus tear after an acute injury. Such tears are associated with knee locking and a block to full extension. These tears are more common in young patients, often associated with ACL tears, and are the most commonly missed meniscal tear on MRI.