Reason: Arthrofibrosis S/P patellar tendon repair History: stiff knee MENISCI: There is slight truncation of the free edge of the body of the lateral meniscus which may reflect prior partial meniscectomy or chronic attritional tearing. Otherwise the lateral meniscus appears intact. The medial meniscus appears intact.ARTICULAR CARTILAGE AND BONE: Moderate to severe osteoarthritis affects the patellofemoral joint with focal full-thickness articular cartilage loss along the femoral trochlea, centrally, and additional full-thickness cartilage loss along the lateral facet. There is additional degeneration of the articular cartilage of the patella. The medial and lateral compartment articular cartilage appears intact.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: There is linear signal abnormality extending vertically through the patella presumably related to prior patellar tendon repair. There is deformity of the patellar tendon, the distal half of which appears thickened with the proximal half appearing thinned. Although the thinned proximal fibers can be followed to the patella on the sagittal sequences, they are less well-defined on the axial series and we are uncertain if these low signal fibers reflect residual patellar tendon or simply scar tissue related to chronic rupture. Furthermore, there is a 2 cm ossicle replacing the lateral fibers of the proximal patellar tendon. The quadriceps tendon appears slightly thickened but appears intact.ADDITIONAL
1. Surgical changes compatible with prior patellar tendon repair with deformity of the patellar tendon as described above that may in part represent scar tissue from chronic rupture.2. Osteoarthritis of the patellofemoral joint and other findings as described above.