51-year-old female with left knee swelling and pain. Evaluate for meniscal tear. MENISCI: There is diffuse attenuation of the medial meniscus likely reflecting extensive chronic attritional tearing. There are linear foci of intermediate signal intensity within the anterior and posterior horns which extend to the tibial articular surface, representing additional tears. An ossicle replaces much of the posterior horn of the medial meniscus near its root. The root of the posterior horn of the lateral meniscus is ill-defined and likely reflects chronic tearing. There is intermediate signal intensity within the body of the lateral meniscus, which extends to the free edge, likely representing fraying. There is extensive intermediate signal intensity within the anterior horn of the lateral meniscus consistent with intrasubstance degeneration and degenerative tearing.ARTICULAR CARTILAGE AND BONE: There is near full-thickness to full-thickness degeneration of the articular cartilage of the weightbearing portion of the lateral femoral condyle with associated degenerative subchondral signal abnormality. There is also thinning of the articular cartilage of the lateral tibial plateau posteriorly. There is near full-thickness degeneration of the articular cartilage of the weightbearing portion of the medial femoral condyle and to a lesser degree the medial tibial plateau. There is moderate degeneration of the articular cartilage of the patellofemoral compartment with findings suggestive of focal delamination of the articular cartilage along the medial facet of the patella. There are large tricompartmental osteophytes, which have progressed since the prior examination.LIGAMENTS: The ACL is not visualized suggesting chronic rupture. The PCL appears intact. The collateral ligaments appear intact.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Moderate to severe tricompartmental osteoarthritis which has progressed slightly when compared to the prior examination as well as degeneration and degenerative tearing of both menisci as described above.2. Nonvisualization of the ACL indicating a chronic tear.