Female, 45 years old. Knee injury. Suspected patellar dislocation. MENISCI: There is mild fraying of the menisci, medial greater than lateral, without discrete tear identified.ARTICULAR CARTILAGE AND BONE: There are high-grade focal cartilage defects of the lateral patellar facet and patellar apex on the background of severe generalized thinning, without significant underlying bone marrow signal abnormality. There is also mild to moderate diffuse thinning of the medial and lateral femoral condyles without focal cartilage defects. Bone marrow signal is normal.LIGAMENTS: Cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Severe cartilage thinning of the patella with full-thickness defects involving the apex and lateral patellar facet. Mild diffuse cartilage loss elsewhere in the knee.2.Mild meniscal fraying, without meniscal tear identified.3.Moderate joint effusion.