Reason: evaluate menisci History: medial joint line pain, effusion, "popping" MENISCI: There is a complex tear of the posterior horn of the medial meniscus which extends to involve the body of the meniscus. There is slight medial extrusion of the body of the meniscus. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is a full-thickness articular cartilage defect along the lateral facet of the femoral trochlea, centrally, measuring approximately 12 mm in the craniocaudal dimension (image 15; series 4). There is a full-thickness articular cartilage fissure along the medial facet of the femoral trochlea. There is a partial-thickness articular cartilage defect along the lateral facet of the patella. There is a full-thickness articular cartilage defect affecting the weightbearing surface of the medial femoral condyle above the posterior horn of the meniscus measuring approximately 2 cm in the AP dimension (image 28; series 4). There is increased bone marrow signal abnormality within the medial femoral condyle and medial tibial plateau which may be degenerative in etiology. Note is made of a subcentimeter focus of lobulated signal abnormality in the proximal fibula likely representing an enchondroma.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Complex tear of the posterior horn and body of the medial meniscus.2. Full-thickness articular cartilage defects as described above.3. Joint effusion with large Baker's cyst with findings suggestive of a synovitis.