51-year-old female. Right knee pain, pain posteriorly. Evaluate for chondral injury versus meniscal tear. MENISCI: Blunting of the free edge of the posterior horn of the lateral meniscus consistent with a partial radial tear. Medial meniscus is intact without evidence of a tear.ARTICULAR CARTILAGE AND BONE: Diffuse moderate cartilage thinning of the lateral tibiofemoral compartment with full thickness cartilage defects at the tibial and femoral weight-bearing articular surface. There is associated mild subchondral edema in the lateral femoral condyle and tibial plateau.Medial tibiofemoral and patellofemoral compartment articular cartilage is intact without focal defects.LIGAMENTS: Post surgical findings of ACL repair with an intact graft. PCL and LCL is intact. Mild edema adjacent to the MCL without evidence of a tear. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1. Likely ruptured Baker's cyst.2. Partial radial tear of the posterior horn of the lateral meniscus.3. Full thickness cartilage loss in the lateral tibiofemoral compartment.