Left knee instability MENISCI: There is mild intrasubstance degeneration of the posterior horn of the medial meniscus but otherwise there is no evidence of tear in either the medial or lateral menisci.ARTICULAR CARTILAGE AND BONE: There is heterogeneity and moderate articular cartilage loss with partial-thickness defects identified within the femoral trochlea centrally. The articular cartilage of the patella is intact as is the articular cartilage of the medial and lateral compartments. A scattered area of increased T2/low T1 signal intensity is identified within the fibular head/neck which may represent a cartilaginous lesion.LIGAMENTS: No significant abnormality noted. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Mild intrasubstance degeneration of the medial meniscus without evidence of discrete medial or lateral meniscal tear.2. Moderate articular cartilage loss of the femoral trochlea centrally with a small joint effusion.