25-year-old male twists his right knee while playing football. He reports a locking sensation and joint line tenderness. McMurray test elicits a painful click. What is the most likely diagnosis?

• A Medial meniscus tear ✓
• B Lateral meniscus tear
• C Anterior cruciate ligament tear
• D Medial collateral ligament tear

Explanation

Locking and joint line tenderness are hallmark features of a meniscus tear. The medial meniscus is less mobile and more commonly injured than the lateral meniscus during weight-bearing rotation. An ACL tear typically presents with immediate hemarthrosis and a positive Lachman test, not mechanical locking.

Reference: Campbell's Operative Orthopaedics, 14th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.