Female 33 years old Reason: Possible OCD lesion left distal femur MENISCI: Anterior horn of the medial meniscus is diminutive without discrete tear. The lateral meniscus is unremarkable.ARTICULAR CARTILAGE AND BONE: There is a focal full-thickness osteochondral defect in the lateral aspect of the medial femoral condyle measuring 6 mm in coronal dimension and 15 mm in AP dimension, with subchondral cyst formation. In the joint space there is a loose body adjacent to this defect measuring 12 mm in coronal dimension. There is T2 hyperintense bone marrow edema in the medial femoral condyle and medial tibial plateau. There is a large band of low signal corresponding to sclerosis on radiograph in the femoral diaphysis most likely representing an unusual enostosis and is unlikely to be of any clinical significance. There is a focal partial-thickness defect in the medial facet of the patella.LIGAMENTS: Cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: Extensor mechanism is intact.ADDITIONAL
1.Osteochondral defect with adjacent loose body in the lateral aspect of the medial femoral condyle.2.Focal partial-thickness defect in the medial facet of the patella. 3.Moderate joint effusion.4.Band of low signal corresponding to sclerosis on radiograph in the femur, most likely representing an unusual enostosis, unlikely of any clinical significance.