Left knee pain, no improvement with physical therapy, 6 months of pain, evaluate for medial meniscus tear. MENISCI: There is branching linear signal within the posterior horn of the medial meniscus extending to both the femoral and tibial surfaces indicating a tear. The tear also extends through the peripheral fibers of the posterior horn decompressing into small parameniscal cysts. The intrameniscal signal extends into the body of the meniscus indicating intrasubstance degeneration. The anterior horn appears normal. The lateral meniscus appears normal.ARTICULAR CARTILAGE AND BONE: There is mild heterogeneity of the articular cartilage of the anterior aspect of the lateral femoral condyle suggesting focal degeneration. Otherwise the articular cartilage appears normal for age. Bone marrow signal intensity appears normal.LIGAMENTS: The cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
Tear of posterior horn of medial meniscus associated with parameniscal cyst formation as described above.