Right knee pain. Cartilage/meniscus tear? MENISCI: There is marked attenuation of the medial meniscus that I suspect represents a combination of prior partial meniscectomy and chronic attritional tearing. Additionally, however, I see little if any meniscal tissue at the expected site of the root of the posterior horn of the medial meniscus, suggesting a tear. Increased signal intensity within the body of the medial meniscus extending to the tibial articular surface may represent additional tearing.There is also marked attenuation of the body and posterior horn of the lateral meniscus that I suspect represents a combination of prior partial meniscectomy and chronic attritional tearing. Additionally, however, there is branching signal abnormality within the posterior horn of the medial meniscus extending to both articular surfaces, indicating complex tearing.ARTICULAR CARTILAGE AND BONE: There is full-thickness degeneration of the articular cartilage along the posterior aspect of the medial femoral condyle with small foci of degenerative signal abnormality in the underlying subchondral bone. There is also degeneration of the articular cartilage along the posterior aspect of the medial tibial plateau. Heterogeneity of the articular cartilage of the lateral tibiofemoral compartment indicates moderate degeneration, with probable full-thickness cartilage loss posteriorly along the lateral tibial plateau and delamination along the posterior aspect of the lateral femoral condyle. The articular cartilage of the patellofemoral joint appears relatively preserved. There are tricompartment osteophytes.LIGAMENTS: Tunnels and interference screws within the distal femur and proximal tibia indicate prior ACL reconstruction; however no intra-articular graft is seen, indicating chronic rupture. Thinning of the proximal fibers of the posterior cruciate ligament may represent chronic partial-thickness tearing. The superficial band of the medial collateral ligament appears intact. The lateral collateral ligament complex appears intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1.ACL graft rupture.2.Imaging findings of medial and lateral meniscal tearing, and probably surgical changes from prior partial meniscectomy.3.Osteoarthritis with loose bodies and other findings as described above.