Reason: meniscus tear History: pain MENISCI: Note is made of a full-thickness radial tear involving the body of the lateral meniscus. There is also linear branching signal abnormality within the peripheral fibers of the posterior horn of the medial meniscus which appears to extend to the femoral articular surface, indicating a complex horizontal tear with a longitudinal component (image 6; series 5). The majority of tear involves the peripheral fibers and extends to posterior peripheral surface of the meniscus.There are lobulated subcentimeter foci of fluid signal intensity along the posterior aspect of the posterior horn of the meniscus indicating parameniscal cyst formation (image 7; series 9), which also also support the presence of a tear in the posterior horn of the medial meniscus.ARTICULAR CARTILAGE AND BONE: There is minimal superficial fraying/blistering of the articular cartilage along the median eminence of the patella. Otherwise no full-thickness or near full-thickness articular cartilage defects are identified. There is increased signal abnormality within the tibial tubercle at the insertion of the patellar tendon which may represent an enthesitis. Otherwise no bone marrow signal abnormality is seen.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact. There is minimal increased signal abnormality within the proximal fibers of the patellar tendon which may reflect a mild patellar tendinosis. ADDITIONAL
1. Radial tear of the lateral meniscus. Complex tear of the posterior horn of the medial meniscus with parameniscal cyst formation.2. Findings indicating a mild patellar tendinosis and enthesitis at its insertion on the tibial tuberosity.3. Fluid signal intensity tracking along the semimembranosus may reflect a ruptured/leaking Baker's cyst or perhaps a mild strain injury in the correct clinical context. Other findings as described.