Crohn's disease. Persistent left knee pain. MENISCI: There is degeneration of the posterior horn of the medial meniscus without discrete linear signal to suggest tear. The lateral meniscus is unremarkable.ARTICULAR CARTILAGE AND BONE: There is moderate degeneration of the cartilage of the medial patellar facet with underlying bone marrow reactive changes. There is minimal cartilage degeneration in the medial compartment.LIGAMENTS: The cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: No significant abnormality noted.OTHER: Small joint effusion is present. No abnormal enhancement is seen to suggest infection or synovitis.
Mild degenerative changes, as described above. No abnormal enhancement to suggest an infectious or inflammatory process. 