Reason: meniscus degen History: pain MENISCI: A complex tear affects the posterior horn of the medial meniscus, with horizontal and vertical components. The lateral meniscus is unremarkable.ARTICULAR CARTILAGE AND BONE: There is marked thinning of the patellar articular cartilage, without focal defect. There is underlying bone marrow edema within the medial aspect of the lateral patellar facet. The remainder of the articular cartilage is unremarkable.LIGAMENTS: The anterior collateral ligament is not visualized, consistent with complete tear. The posterior collateral ligament is unremarkable. The medial and lateral collateral ligament complex are unremarkable. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Complete tear of the anterior collateral ligament.2.Complex tear of the posterior horn of the medial meniscus, with horizontal and vertical components.3.Marked thinning of the patellar articular cartilage without focal defect.