Continued pain despite microfracture MFC. MENISCI: The medial meniscus is attenuated, compatible with prior meniscectomy. There is fragmentation and increased signal within the posterior horn of the medial meniscus, which likely reflects a combination of post-surgical changes and tearing and is similar to prior. No tear is identified in the lateral meniscus. ARTICULAR CARTILAGE AND BONE: There is severe degeneration of the articular cartilage in the medial compartment with large areas of full thickness cartilage loss are similar to the prior examination. The subchondral bone marrow edema type signal is persistent, though decreased, and likely represents a combination of post-surgical changes and degeneration. There is mild heterogeneity of the lateral compartment articular cartilage is similar to prior, with slightly decreased subchondral reactive bone marrow changes. No defects are seen in the patellar cartilage. No specific imaging features of osteonecrosis are identified.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Unchanged extensive cartilage degeneration with persistent, though decreased, bone marrow reactive changes which likely reflect a combination of post-surgical changes and degeneration. 2. Attenuation of medial meniscus with increased signal intensity that likely reflects a combination of post-surgical changes and tearing, which is similar to prior.3. No evidence of osteonecrosis, per clinical query.