Reason: quadricep tendon disruption History: fall, pain, tenderness at insertion site and what appears to be a deformity of quadricep muscle MENISCI: There is linear increased signal abnormality along the free edge of the posterior horn of the medial meniscus which extends to the tibial and femoral articular surface indicating a small radial tear (image 21; series 1101 and image 13; series 1201). The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is a near full-thickness to full-thickness articular cartilage fissure along the lateral facet of the patella. No bone marrow signal abnormality is identified.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: There is tearing of the quadriceps tendon at the level of its insertion on the patella with approximately 2 cm of retraction of the proximal tendon fragments. More specifically, there is complete disruption of the rectus femoris. There is also near complete to complete disruption of the vastus medialis and lateralis as well. Fibers of the vastus intermedius can be traced to the level of their insertion on the patella, likely reflecting partial thickness tearing. The patellar tendon appears intact.ADDITIONAL
1. Near complete disruption of the quadriceps tendon with retraction as described above.2. Small radial tear of the posterior horn of the medial meniscus, near its root.3. Articular cartilage fissuring affecting the patellofemoral articulation as described above.4. Small-to-moderate size joint effusion. Other findings as described above.