Pain, swelling, aspiration of frank blood. Recent fall injury, status post right knee arthroscopy. MENISCI: A majority of the posterior horn of the medial meniscus is absent, which is likely post-surgical. Of the remaining posterior horn, there are multiple defects along the undersurface which likely represents tearing. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is thinning and fraying of the cartilage of the femoral trochlea. No full thickness chondral defect is evident. There is a focal abnormal T2 signal in the patellar cartilage which likely represents a focal tear. The cartilage of the medial and lateral compartments appears intact.There is linear T1 signal with minimal cortical offset of the lateral tibial plateau along with associated abnormal T2 signal; this is compatible with a non-displaced fracture. There are other patchy areas of abnormal T2 signal within the anterior and posterior regions of the femoral head and tibial plateau. LIGAMENTS: The collateral and cruciate ligaments are intact. The popliteus muscle/tendon appear intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Non-displaced fracture of the lateral tibia plateau. 2. Post-surgical changes of the posterior horn of the medial meniscus with probable undersurface tearing of the posterior horn remnant. 3. Thinning and fraying of the femoral trochlear cartilage without full thickness defect.4. Small joint effusion.5. No evidence of ligamentous injury. 