Female 41 years old Reason: Left knee pain, injured knee, patient was struck on the lateral aspect of knee, also had prior injury while doing exercise, pain with stairs, + McMurray's, pain lateral, evaluate for lateral meniscus tear History: Left knee pain. MENISCI: The lateral meniscus appears intact. There is slight blunting and attenuation of the posterior horn and body of the medial meniscus, which may reflect chronic attritional fraying or, possibly partial prior meniscectomy if there is such a history; but we see no discrete meniscal tear.ARTICULAR CARTILAGE AND BONE: There is full-thickness degeneration of the articular cartilage of the medial femoral condyle just anterior to the posterior horn of the medial meniscus measuring approximately 1 cm in diameter. There is signal abnormality within as well as slight prominence of the underlying subchondral bone that is likely degenerative in etiology, although could conceivably reflect sequelae of prior microfracture. There is also full-thickness degeneration of the articular cartilage of the medial femoral condyle posterior to the meniscus, with delamination of the adjacent articular cartilage. Signal abnormality within the underlying subchondral bone is presumably degenerative in etiology. There is moderate degeneration of the articular cartilage of the inferior aspect of the patella with full thickness cartilage loss of the most inferior aspect of the medial patellar facet. There are patellofemoral osteophytes, including a prominent osteophyte along the medial aspect of the femoral trochlea, devoid of overlying cartilage. Articular cartilage of the lateral compartment appears relatively intact. A tiny focus of signal abnormality in the distal femoral metaphysis may represent a small enchondroma.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Possible mild chronic attritional fraying of the medial meniscus, but we see no discrete meniscal tear.2.Cartilage degeneration as described above, most severely affecting the medial and patellofemoral compartments.3.Joint effusion and nonspecific soft tissue edema as described above.