Sagittal Fat-Sat T2WI, T1WI, corona

Sagittal Fat-Sat T2WI, T1WI, coronal Fat-Sat T2WI and axial Fat-Sat T2WI of the right knee were obtained without contrast.Normal alignment of the right knee, without appreciable displaced fracture, subluxation or destruction. Focal partial to full thickness cartilaginous fraying is seen at the midline to lateral femoral trochlear facet, with faint subchondral marrow edema. Faint subchondral subcortical bone marrow edema is also seen in the lateral corner of the lateral femoral trochlear facet, likely due to contusion.Mild postpatellar effusion is seen. No plica hypertrophy or loose body. The quadriceps tendon, patellar tendon, medial and lateral patellar retinacula are intact. Minimal bulky appearing anterior cruciate ligament without tear, suspicious for prior mild sprain. The posterior cruciate ligament appears intact. The lateral meniscus and lateral femorotibial cartilages are intact.Mild edema at the distal lateral collateral ligament, adjacent to its fibular attachment is seen, suggestive of mild sprain or degeneration with bursitis. The IT band, biceps femoris tendon, and popliteus tendon are intact. Intact proximal tibiofibular joint.Partial to full thickness cartilaginous fraying is seen at the anterior weight bearing aspect of the medial femoral condyle, with faint subchondral bone marrow edema. Increased signal intensity is seen in posterior horn of the medial meniscus, without defined tear. Mild edema at the distal semimembranosus tendon is seen, without tear. The medial collateral ligaments, and pes anserine tendons are intact. No Baker’s cyst. The muscles are intact. Impression: Focal moderate to severe cartilaginous degeneration at the anterior weight bearing aspect of the medial femoral condyle, and midline to lateral femoral trochlear facet.Degeneration of the posterior horn medial meniscus. Tendinopathy at the distal semimembranosus tendon. Evidence of mild sprain or degeneration with bursitis at the distal lateral collateral ligament.Focal contusion in the lateral corner of the lateral femoral trochlear facet.Reactive postpatellar effusion.