77-year-old female with pain, swelling and effusion of the right knee MENISCI: There is enlargement of the body of the lateral meniscus, which contains extensive increased globular signal intensity indicating mucoid degeneration, progressed from the prior exam. The body of the lateral meniscus is extruded. This globular signal intensity disrupts the femoral articular surface of the meniscus, likely representing degenerative tearing. Signal abnormality extends into the anterior horn of the lateral meniscus, which appears attenuated and fragmented, likely representing extensive degenerative tearing that has also progressed from the prior exam. Mucoid degeneration of the posterior horn of the lateral meniscus appears less extensive than that involving the body and anterior horn.Intrasubstance signal within the medial meniscus is compatible with mucoid degeneration. There is mild irregularity of the inner edge of the posterior horn of the medial meniscus suggesting degenerative fraying, which appears similar to the prior exam.ARTICULAR CARTILAGE AND BONE: There has been progression of osteoarthritis affecting the lateral joint compartment with the weight bearing surfaces appearing devoid of articular cartilage. Subchondral cysts and edema signal are present in the lateral femoral condyle and tibial plateau. Loss of cartilage along the weight-bearing portion of the medial femoral condyle has perhaps progressed slightly compared with the prior exam with foci of degenerative signal abnormality seen within the subchondral bone. There has been slight progression of multifocal partial thickness degeneration of the articular cartilage of the patellofemoral joint.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The quadriceps tendon is intact.ADDITIONAL
Progression of osteoarthritis and degeneration/degenerative tearing of the lateral meniscus, as described above.