36-year-old female. Complains of worsening pain swelling, decreased movement. MENISCI: Medial and lateral menisci are normal in signal intensity and morphology without evidence of a tear.ARTICULAR CARTILAGE AND BONE: Focal full-thickness cartilage loss of the medial femoral condyle measuring approximately 13 mm in AP dimension. Diffuse moderate thinning of the patellar cartilage consistent with chondromalacia without a focal full thickness defect. Small tricompartmental osteophytes. No bone contusion or focal worrisome bone marrow signal abnormality. Patchy red marrow in the distal femoral metaphysis.LIGAMENTS: There is extensive edema around the MCL, particularly proximally, with intermediate signal abnormality and thickening of the tendon, consistent with MCL strain. ACL, PCL, and LCL complex are intact.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Focal full thickness cartilage loss of the medial femoral condyle weight-bearing articular surface. Diffuse moderate patellar cartilage thinning/degeneration.2. MCL strain.3. Moderate knee joint effusion and small Baker's cyst.