Diffuse thickening and periligamentous edema involving superifcial and deep fibers of femoral attachment of medial collateral ligament. Degenerate torn posterior root of medial meniscus with mild extrusion. Grade 2 degenerate anterior root of lateral menicus. Grade 2 anterior cruciate degeneration. Focal cystic degeneration of upper outer margin of lateral femoral condyle. Moderate suprapatellar effusion. Grade 4 lateral patellar chondromalacia with patellar subchondral cystic degeneration.