Female 50 years old Reason: evaluate for lateral meniscal tear History: knee pain playing sports and history of prior partial menisectomy. MENISCI: There is attenuation and blunting of the anterior horn and body of the lateral meniscus consistent with stated history of prior partial meniscectomy. There is slight lateral extrusion of the body of the lateral meniscus. There is intrasubstance signal in the body and anterior horn which likely represents degeneration. Within the anterior horn this signal extends to the tibial articular surface but appears similar to before and may not be of clinical significance. We see no fluid signal intensity within the meniscus or other findings to suggest an unstable meniscal tear.The medial meniscus is of normal signal intensity and morphology.ARTICULAR CARTILAGE AND BONE: There is abnormal signal intensity within the weight-bearing aspect of the lateral femoral condyle likely representing a combination of degenerative cyst formation and post microfracture changes. The overlying cartilage is thinned and heterogeneous indicating moderate degeneration with what appears to be a full thickness or near full thickness cleft, best seen on coronal T2 weighted sequence. Overall the articular cartilage appears similar to prior study. Edema within the lateral femoral condyle seen on prior study has largely resolved. There is edema in the posterior aspect of the medial femoral condyle which is new but nonspecific. The overlying cartilage appears intact.There is mild heterogeneity of the articular cartilage of the patella indicating mild degeneration but we see no fluid-filled defects. There is a small partial thickness defect centrally and superiorly within the cartilage of the femoral trochlea.LIGAMENTS: No significant abnormality noted. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Lateral meniscus abnormalities as described above are favored to be post operative in etiology. We see no findings to suggest unstable lateral meniscal tear.2. Cartilage degeneration, loose bodies and other findings as described above.