39-year-old female with left knee pain and swelling. Evaluate meniscus tear versus ligamentous injury Motion artifact limits examination. The high definition coil could not be utilized secondary to patient's body habitus resulting in slightly suboptimal image quality.MENISCI: The lateral meniscus appears intact. There is globular increased signal abnormality within the posterior horn of the medial meniscus consistent with intrasubstance degeneration. There are foci of increased signal abnormality which extend to the tibial articular surface consistent with undersurface fraying. There is no linear signal abnormality which extends to either articular surface or fluid filled defects to suggest an unstable tear.ARTICULAR CARTILAGE AND BONE: Suboptimal evaluation of the articular cartilage of the patellofemoral joint articular cartilage secondary to the aforementioned limitations. No overt full-thickness or near full-thickness articular cartilage defects are identified. Heterogeneous bone marrow signal abnormality likely represents residual islands of red marrow. There is increased signal abnormality within the posterior aspect of the tibial plateau with a subcentimeter focus of fluid signal intensity at the insertion site of the PCL which may reflect degenerative signal abnormality.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact. There is mild increased signal abnormality within the distal fibers of the patellar tendon just proximal to its insertion on the tibial tubercle which may reflect a very mild tendinosis.ADDITIONAL
1. Undersurface fraying and degeneration of the medial meniscus as described above.2. Small joint effusion.