Anterior cruciate ligament tear - complete

Case contributed by Ahmed Abdrabou


Left knee pain and limitation of movement following twisting injury during basketball game

Patient Data

Age: 16 years
Gender: Male

Rupture of mid fibers of anterior cruciate ligament (ACL), anterior tibial translation with redundant patellar tendon, buckled yet intact posterior cruciate ligament (PCL), a small vertical tear of posterior horn of lateral meniscus, marrow contusion of the lateral femoral and tibial condyles and moderate joint effusion.

Case Discussion

Diagnosis of ACL tear is made by detection of primary and secondary signs. Primary sign includes discontinuity and abnormal signal of ACL fibers and secondary signs include PCL buckling, anterior tibial translation, uncovered PHLM, empty notch sign, bone bruise and Segond fracture.

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