74-year-old male with left knee pain for several years, increasing discomfort over last 5 weeks, evaluate for chondral injury versus meniscal tear MENISCI: Complex tearing of the posterior horn of the medial meniscus. This tear consists of a radial component with blunting of the majority of the posterior horn in addition to cleavage of the free edge of the posterior horn near its root. Medially within the posterior horn and body, there is linear branching signal abnormality that extends to the tibial articular surface. There is also slight medial extrusion of the body of the medial meniscus. Anterior horn is intact. These findings are similar to those seen on the MR dated 12/29/2005.There is seen increased signal intensity within the body and posterior horn of the lateral meniscus compatible with intrasubstance degeneration. Additionally, there is linear signal intensity extending to the tibial articular surface consistent with a horizontal tear appearing similar to the prior exam.ARTICULAR CARTILAGE AND BONE: Moderate osteoarthritis with tricompartmental osteophytes. The articular cartilage of the medial tibiofemoral compartment is thinned with heterogeneous signal along the medial femoral condyle indicating degeneration. There are near full-thickness to full-thickness defects along the articular cartilage of the lateral femoral condyle and lateral tibial plateau adjacent to the posterior horn of the lateral meniscus. Additionally, there is heterogeneity of the articular cartilage anteriorly indicating degeneration. Foci of full-thickness defects involving the articular cartilage of the patella with underlying subchondral cyst formation as well as the articular cartilage of the trochlea. Overall, the osteoarthritis has progressed since the prior studyLIGAMENTS: The cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Meniscal tears as described above appear grossly similar to the prior study.2.Moderate tricompartmental osteoarthritis has progressed since the prior study.3.Other findings as above.