Reason: evaluate for meniscal tear History: pain on medial aspect of the knee MENISCI: There is minimal intrasubstance degeneration of the posterior horn of the medial meniscus. The anterior horn of the lateral meniscus is severely deformed and blunted indicating severe degeneration which extends into the body of the meniscus. There is linear increased signal abnormality within the posterior horn of the meniscus indicating a complex degenerative tearing with a large horizontal component that extends to the femoral articular surface. There is intrasubstance degeneration of the posterior horn of the lateral meniscus as well.ARTICULAR CARTILAGE AND BONE: There is severe articular cartilage degeneration along the lateral tibiofemoral compartment with large areas of the lateral femoral condyle and lateral tibial plateau completely devoid of articular cartilage particularly above the posterior horn of the meniscus. There is bone marrow signal abnormality within the lateral tibial plateau and lateral femoral condyle likely degenerative in etiology.There is focal full-thickness articular cartilage degeneration along the medial femoral condyle above the body of the meniscus. There is subjective thinning of the articular cartilage posteriorly. There is superficial fraying of the articular cartilage along the lateral facet of the patella. There is full-thickness articular cartilage degeneration along the lateral facet of the femoral trochlea, centrally. There are tricompartmental osteophytes. LIGAMENTS: The cruciate and collateral ligaments appear intact. There is increased signal abnormality underlying the superficial band of the MCL which may represent a sprain in the correct clinical context. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Osteoarthritis of the knee including extensive degeneration and degenerative tearing of the lateral meniscus as well as tricompartmental articular cartilage degeneration, most pronounced along the lateral tibial femoral compartment as described above.2. Moderate size joint effusion with a Baker's cyst. Multiple loose bodies within the joint and Baker's cyst as described above.3. Increased signal abnormality interposed between the superficial band of the MCL and meniscofemoral coronary ligament which may represent a mild MCL sprain in the correct clinical context.4. Other findings as described above.