Pain and effusion, evaluate for torn meniscus. BONES: Osseous alignment is within normal limits. There is increased bone marrow signal in the posterolateral medial tibial plateau with linear hypointense signal on proton density sequence, which likely represents insufficiency fracture.MENISCI: There is truncation and loss of triangular shape of the posterior horn of the medial meniscus, consistent with tear. The lateral meniscus is normal in morphology and signal characteristics.ARTICULAR CARTILAGE AND BONE: Grade II to III chondromalacia of the medial compartment and medial facet of the patella. Grade II chondromalacia of the lateral compartment.LIGAMENTS: Anterior and posterior cruciate ligaments are unremarkable. There is increased signal around the medial collateral ligament suggestive of mild sprain. Lateral collateral ligament is unremarkable. EXTENSOR MECHANISM: Quadriceps mechanism and patellar ligament are within normal limits.ADDITIONAL
Insufficiency fracture of the posterolateral medial tibial plateau.Tear of the posterior horn of the medial meniscus.Large Baker's cyst.Mild MCL sprain.