35-year-old female with right knee pain, rule out lateral meniscal tear MENISCI: There is mild lateral extrusion of the body of the lateral meniscus, but we see no discrete meniscal tear. Mild attenuation of the body of the medial meniscus. There is also a small focus of intermediate signal intensity at the junction of the posterior horn and body of the medial meniscus which may represent a small undersurface tear. We suspect that this was present on the prior MRI of 4/3/2003 and may represent a healed tear.ARTICULAR CARTILAGE AND BONE: There is full-thickness loss of cartilage along the lateral facet of the patella with degenerative signal abnormality in the underlying subchondral bone. Moderate cartilage loss is present along the medial facet. There is perhaps mild thinning of the femoral cartilage of the trochlea. The articular cartilage of the medial and lateral compartments appears slightly thinned and there are also small tricompartmental osteophytes. Of note, review of prior studies indicate a history of JRA. A moderate sized joint effusion is present with lobulated foci of intermediate signal suggesting synovitis, but we see no well-defined erosions. The trochlear groove is shallow with slight lateral displacement of the patella. These findings suggest a femoral trochlear dysplasia. The Insall-Salvati ratio is 1.25 which is borderline abnormal and likely exaggerated due to extension of the knee.LIGAMENTS: The ACL and PCL are intact. The medial and lateral collateral ligament complex is intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Osteoarthritis as described above, most severely affecting the patellofemoral joint with full-thickness cartilage loss along the lateral facet. This may be associated with mild femoral trochlear dysplasia and may be in part secondary to chronic inflammatory arthritis.2.Mild extrusion of the body of the lateral meniscus with no discrete lateral meniscal tear and a possible healed tear of the medial meniscus as described above