43-year-old female with exacerbation of medial knee pain. Evaluate meniscus. MENISCI: There is a horizontally oriented tear (possibly a "flap tear") of the posterior horn of the medial meniscus predominantly involving the undersurface of the inner half of the meniscus, which is new when compared to the prior examination. There is additional intrasubstance signal within the posterior horn of the medial meniscus indicating degeneration, which is also new from prior examination. There is also mucoid degeneration and slight medial extrusion of the body of the medial meniscus, which has progressed when compared to the prior study. The anterior horn of the medial meniscus appears intact. There is attenuation of the posterior horn of the lateral meniscus that may reflect interval partial meniscectomy, although such history was not provided. There is also intrasubstance signal within the posterior horn and body of the lateral meniscus indicating degeneration. The anterior horn of the lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is near full-thickness to full-thickness degeneration of the articular cartilage of the weightbearing portion of the medial femoral condyle, just above and anterior to the posterior horn of the medial meniscus. There is also a small focus of edema type signal within the underlying subchondral bone which is new when compared to the prior study. There is a small cyst noted within the posterior aspect of the medial tibial plateau with adjacent edema and probable thinning of the overlying articular cartilage, new from prior examination. There is full-thickness degeneration of the articular cartilage of the posterior lateral femoral condyle with edema type signal within the underlying marrow, appearing similar to the prior study. There is superficial degeneration of the articular cartilage of the weightbearing portion of the lateral femoral condyle and lateral tibial plateau between the meniscal horns, appearing similar to the prior study. There is severe degeneration of the articular cartilage along the lateral facet of the patella with areas devoid of articular cartilage and associated subchondral cysts, appearing similar to the prior study. There is superficial degeneration of the articular cartilage of the medial facet of the patella, appearing similar to the prior study. There is full-thickness degeneration of the articular cartilage of the lateral facet of the femoral trochlea, appearing similar to the prior study. There are tricompartmental osteophytes.LIGAMENTS: There is a defect of the proximal fibers of the MCL with minimal, if any, associated edema which was not present on the prior study and may reflect interval trauma or may be iatrogenic from interval arthroscopy. The ACL and PCL appear intact. The LCL appears intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. New medial meniscus tear as described above.2. Attenuation of the posterior horn of the lateral meniscus may reflect interval partial meniscectomy, although this information was not included in the stated clinical information.3. Tricompartmental cartilage degeneration and other findings as described above.