Multiple patellar dislocations MENISCI: No significant abnormality noted.ARTICULAR CARTILAGE AND BONE: There is marrow edema within the lateral femoral condyle and medial patellar facet consistent with prior dislocation. Additionally, there is a 1 cm ossicle medial to the patella that likely represents a chronic avulsion fracture fragment. The femoral trochlea is abnormally shallow indicating dysplasia. There is a small full-thickness cartilage defect along the lateral femoral condyle above the junction of the anterior horn and body of the lateral meniscus. The remaining articular cartilage and marrow signal is normal.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The patellar and quadriceps tendons are intact. The Insall Salvati ratio is 1.4 suggesting mild patella alta. The TT to TG distance is 2.3 cm. ADDITIONAL
1. Findings indicating prior patellar dislocation including an ossicle present along the medial aspect of the patella which is thought to represent a chronic avulsion fracture. Furthermore, there is femoral trochlear dysplasia, an elevated TT to TG distance, and mild patella alta.2. Small but full-thickness articular cartilage defect of the lateral femoral condyle with other findings described above.