Male, 47 years old. Left knee pain, s/p left knee medial femoral condyle microfracture, evaluate healing, evaluate for new chondral injury, meniscus tear. MENISCI: There is attenuation of the body and posterior horn of the medial meniscus consistent with partial meniscectomy. There is globular high signal intensity within the remaining posterior horn of the medial meniscus near its root likely representing intrasubstance mucoid degeneration that appears to extend to the inner edge of the meniscus, likely representing a degenerative tear appearing similar to that seen on the prior study. Also again seen is branching intermediate signal intensity within the periphery of the posterior horn more medially suggesting a complex, predominantly vertical tear that appears similar to that seen on the prior study. Given its location in the periphery of the meniscus, it is possible that this represents a healed tear. We see no lateral meniscal tear.ARTICULAR CARTILAGE AND BONE: There is new subchondral edema within the medial femoral condyle above the anterior horn of the medial meniscus. There is an overlying full-thickness cartilage defect. The articular cartilage of the lateral compartment and patella are relatively well preserved. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact. There is some edema in the subcutaneous tissues anterior to the patella and patellar tendon which is nonspecific.ADDITIONAL
1.New focus of degenerative subchondral signal abnormality in the medial femoral condyle with an overlying full-thickness cartilage defect.2.Surgical changes involving the medial meniscus with degeneration and tearing as described above, appearing similar to prior.