Left knee pain MENISCI: There is horizontal intrasubstance tearing of the posterior horn of the medial meniscus which extends into the body where there is truncation of the free edge. There is mild extrusion of the meniscus into the medial gutter although the meniscal root appears intact.The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is full-thickness cartilage loss involving both the medial femoral condyle and medial tibial plateau with associated degenerative marrow signal in the underlying bone. There is diffuse thinning of the articular cartilage of the lateral compartment, particularly anteriorly. The patellofemoral articulation demonstrates scattered areas of partial and full-thickness cartilage loss most notably involving the lateral patellar facet and trochlea. LIGAMENTS: Mildly increased signal surrounding the MCL. Otherwise no significant abnormality noted. EXTENSOR MECHANISM: Extensor mechanism is intact. A mild amount of subcutaneous fluid is seen overlying the anterior tibial tuberosity.ADDITIONAL
1. Predominantly horizontal tear of the posterior horn and body of the medial meniscus. The lateral meniscus is intact.2. Severe cartilage loss of the medial compartment with more moderate changes noted in the lateral and patellofemoral compartments.3. Mild MCL sprain.