Male 52 years old left knee "popping" post twisting weeks x-ray with mild OA MENISCI: There is mild intrasubstance degeneration involving the posterior horn of medial meniscus. No discrete tear is evident.There is linear signal involving the posterior horn of lateral meniscus that extends to the periphery as seen on image 9/701 and is suspicious for a small peripheral tear.ARTICULAR CARTILAGE AND BONE: There is full-thickness cartilage loss involving the central weightbearing zone of the medial femoral condyle and tibial plateau. There is reactive marrow edema involving the medial tibial plateau and medial femoral condyle adjacent to the site of cartilage loss.There is diffuse chondral thinning involving the lateral compartment.There is surface irregularity and chondral fibrillation with some undersurface mining involving the medial and lateral facets of the patella.LIGAMENTS: Anterior and posterior cruciate ligaments are intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Moderate osteoarthritis involving the medial femoral tibial compartment with full-thickness cartilage loss.2.Mild osteoarthritis involving the extensor compartment.