37-year-old male. Pain. Evaluate for stress fracture of the medial tibial metaphysis. MENISCI: The medial lateral menisci are intact without evidence of a tear.ARTICULAR CARTILAGE AND BONE: Diffuse mild thinning of the medial patellar facet and median eminence articular cartilage consistent with chondromalacia without a full-thickness defect. Marked diffuse thinning of the lateral tibiofemoral compartment articular cartilage with areas of near full thickness cartilage loss. Moderate diffuse thinning of the medial tibiofemoral compartment articular cartilage.T1 hypointense ill-defined line in the medial tibial plateau, corresponding to the area of sclerosis seen on recent radiograph, most likely represents a stress fracture. Lack of associated edema indicates it is likely healed.LIGAMENTS: The cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: Extensor mechanism is intact.ADDITIONAL
1. No evidence of a meniscal or ligamentous injury.2. T1 hypointense line without associated edema in the medial tibial plateau likely represents a healed stress fracture.3. Tricompartmental cartilage degeneration, most severe in the lateral tibiofemoral compartment. 