Reason: Evaluate healing of microfracture areas, trochlea, and medial femoral condyle 2 years ago, with continue pain and swelling. History: left knee pain MENISCI: There is linear and globular fluid signal abnormality within the posterior horn of the medial meniscus which appears to extend to the femoral articular surface indicating a horizontal tear with probable meniscal cyst formation. There is increased globular signal abnormality within the posterior horn of the medial meniscus indicating intrasubstance degeneration.ARTICULAR CARTILAGE AND BONE: There is increased signal abnormality within the articular cartilage along the weightbearing surface of the medial femoral condyle likely representing the site of prior microfracture. There are foci of low signal intensity in this area which likely represent fibrocartilage formation related to prior microfracture. There is bone marrow signal abnormality in the underlying medial femoral condyle. No full-thickness defect is identified.There is subjective thinning of the articular cartilage of the lateral compartment. There is increased signal abnormality within the articular cartilage along the medial facet of the femoral trochlea which may represent a combination of articular cartilage degeneration and postsurgical change from prior microfracture. No full-thickness defect is identified. There is partial-thickness articular cartilage degeneration along the medial facet of the patella.LIGAMENTS: There is partial tearing of the distal fibers of the anterolateral band of the ACL. There is minimal, if any, increased signal abnormality on fluid sensitive sequences suggesting that this is likely chronic in etiology. The PCL appears intact. The MCL and LCL appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Findings indicating a tear of the posterior horn of the medial meniscus as well as postsurgical change2. Chronic appearing partial thickness tearing of the ACL.3. Articular cartilage signal abnormality along the medial femoral condyle and patellofemoral articulation which likely represents a combination of degeneration and postsurgical change from prior microfracture. No full-thickness articular cartilage defects are identified.4. Large Baker's cyst.