47-year-old female. Right knee lateral meniscus tear status post ACL surgery by Dr. Leland. Right knee pain and swelling. MENISCI: Globular signal abnormality contacting the tibial and femoral articular surfaces in the posterior horn of medial meniscus consistent with complex degenerative tearing. Lateral meniscus is intact without evidence of tear.ARTICULAR CARTILAGE AND BONE: Serpiginous ovoid T1 hypointensity in the posterior lateral femoral condyle consistent with osteonecrosis, unchanged. Diffuse marked cartilage thinning of the medial patellar facet with areas of near full thickness cartilage loss; mild thinning of the lateral patellar facet cartilage near the apex . Tibiofemoral compartment cartilage is intact without a focal defect.LIGAMENTS: Postsurgical findings of ACL reconstruction with an intact graft. PCL is intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Complex degenerative tearing of the posterior horn of the medial meniscus. 2. Moderate knee joint effusion and a small Baker's cyst.