Reason: left knee pain s/p arthroscopy. Look for SONK History: left knee pain after arthroscopy MENISCI: Defect in the body and posterior horn of the medial meniscus, which may represent postoperative changes from partial discectomy. There is more linear signal in the body of medial meniscus which may represent a chronic or acute tear. Lateral meniscus appears intactARTICULAR CARTILAGE AND BONE: Full-thickness loss of the medial compartment femoral and tibial cartilage. Moderate bone marrow edema and small subchondral cyst of the medial tibial plateau. Generalized thinning of the lateral compartment femoral and tibial cartilage. Focal fissuring of the lateral facet of the patellar cartilage.LIGAMENTS: Thickened ACL with edema type signal, although with intact fibers suggestive of mucoid degeneration. PCL is intact. MCL and LCL are intact.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
Defect in the medial meniscus, medial compartment cartilage loss, and bone marrow edema of the medial tibial plateau may reflect changes from prior meniscectomy and chondroplasty. No definite fracture line is visualized in the area of marrow edema in the tibial plateau.