51-year-old female with right knee pain, evaluate for medial meniscal tear MENISCI: Blunting of the free edge of the body of the medial meniscus is slightly more pronounced on the current study than the prior study, suggestive of free edge tearing. A small focus of low signal intensity just lateral to the free edge may represent a small meniscal fragment, but this is equivocal. Intrasubstance degeneration is seen within the body and posterior horn of the medial meniscus. A small linear focus of intermediate signal intensity involving the inner one third of the body of the lateral meniscus was not present on the prior study and may represent a small undersurface tear.ARTICULAR CARTILAGE AND BONE: There is subjective thinning of the articular cartilage within the medial femoral compartment which appears similar to the prior exam. There is near full thickness degeneration of the articular cartilage along the lateral femoral condyle immediately adjacent to the posterior horn of the lateral meniscus with a cartilage flap which is new from the prior exam. There is a focal full-thickness defect of the articular cartilage along the lateral tibial plateau at the base of the intercondylar eminence which appears to have progressed slightly since the prior exam. There is also degeneration of the articular cartilage along the posterior and anterior aspects of the lateral femoral condyle which is similar to the prior exam. There are osteophytes along the medial aspect of the femoral trochlea with thinning of the overlying cartilage, similar to the prior exam. Degeneration of the articular cartilage of the patella is unchanged. Tricompartmental osteophytes are present. A lesion in the distal femoral metaphysis measuring 1.6 cm likely represents a benign enchondroma, similar to the prior exam.LIGAMENTS: The ACL and PCL are intact. The MCL and lateral collateral ligament complex is intact.EXTENSOR MECHANISM: The quadriceps tendon is intact. The patellar tendon is intact, although there is an additional band of low signal intensity extending from the inferior patella to proximal tibia which presumably represents scar tissue.ADDITIONAL
1.Blunting of the free edge of the body of the medial meniscus is slightly more pronounced than on the prior exam and is suggestive of free edge tearing. A small focus of low signal intensity just lateral to the free edge may represent a small meniscal fragment, but this is equivocal.2.Findings suggestive of a small tear involving the inner third of the body of the lateral meniscus, which is of questionable clinical significance.3.Osteoarthritis as described above with progression of cartilage defects involving the lateral compartment.4.Postoperative findings from prior arthroscopy and other findings as described above.