Reason: internal derangement History: pain MENISCI: There is a complex tear of the posterior horn of the medial meniscus which extends to involve the body of the meniscus. There is globular increased signal abnormality within the posterior horn of the lateral meniscus, near its root, indicating intrasubstance degeneration. Some of the signal extends to the articular surface indicating degenerative tearing.ARTICULAR CARTILAGE AND BONE: There is subjective thinning of the articular cartilage of the medial compartment and patellofemoral compartment. There is full-thickness articular cartilage degeneration along the medial aspect of the medial tibial plateau with underlying subchondral cyst formation and signal abnormality which is likely degenerative in etiology. There is also full-thickness articular cartilage degeneration along the lateral aspect of the lateral tibial plateau with underlying subchondral signal abnormality which is likely degenerative in etiology. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. There is thickening and intermediate signal intensity within the ACL with associated lobulated foci of fluid signal intensity internally indicating mucoid degeneration.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Complex tear of the medial meniscus and degenerative tearing of the lateral meniscus.2. Osteoarthritis of the knee including full-thickness articular cartilage degeneration most pronounced along the medial and lateral tibiofemoral compartments. Other findings as described above.