Patient presents with pain in right knee with instability, weakness, and decreased range of motion.


1. Diffuse multidirectional tear of the lateral meniscus with associated body extrusion.

2. Likely medial meniscus posterior horn horizontal tear exiting inner margin meniscal body tear. This tear is not definite, as there is meniscal blunting and the changes may be postoperative. There is no frank fluid within this suspected tear.

3. Tricompartmental osteoarthrosis with most severe cartilage loss in the lateral femorotibial compartment.

4. Moderate-sized joint effusion with synovitis.

5.Diffuse muscle atrophy, with the most significant atrophy in the proximal peroneal muscle compartment, and edema in the lateral gastrocnemius muscle, likely related to altered gait.