Reason: Patient with history of chronic knee pain, swelling noted on exam, with pain on valgus stress, concern for MCL tear vs sprain MENISCI: There is predominantly horizontal tear of the lateral meniscus extending from the anterior root to the body. The lateral meniscus is extruded. Medial meniscus is normal in signal characteristics and morphology.ARTICULAR CARTILAGE AND BONE: Bone marrow signal is within normal limits. Osseous alignment is anatomic. There is thinning of the patellar cartilage, particularly at the lateral facet. There is also thinning of the cartilage at lateral femoral condyle and lateral tibial plateau overlying the meniscal tear.LIGAMENTS: Cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: Quadriceps tendon and patellar tendon are intact.ADDITIONAL
Horizontal tear of the lateral meniscus from the anterior root to the body. There is cartilage thinning of the lateral femoral condyle overlying this region. There is also thinning of the patellar cartilage particularly at the lateral facet. Other findings as above.