17-year-old male with left knee pain. Evaluate for lateral meniscal tear. MENISCI: The lateral meniscus is discoid. There is increased signal in the anterior and posterior horns of the lateral meniscus with signal in the posterior horn extending to the inferior articular surface; findings compatible horizontal cleavage tear. No evidence of abnormal signal in the medial meniscus.ARTICULAR CARTILAGE AND BONE: No significant abnormality noted.LIGAMENTS: The anterior cruciate, posterior cruciate, medial collateral, and lateral collateral ligaments are intact.EXTENSOR MECHANISM: Patellar tendon and quadriceps tendon are intact.ADDITIONAL
Findings compatible with a horizontal cleavage tear of the lateral, discoid meniscus.