Reason: Check MPFL, trochlear dysplasia, measure TT-TG distance, check for loose bodies History: R patellar instability Multiple sequences are degraded by patient motion artifact resulting in suboptimal image quality.MENISCI: The medial and lateral meniscus appear intact. There is a subcentimeter lobulated focus of fluid signal intensity along the posterior aspect of the posterior horn of the medial meniscus which likely represents ganglion formation.ARTICULAR CARTILAGE AND BONE: Signal abnormality within the medial aspect of the patella and lateral aspect of the lateral femoral condyle indicating bone contusions from prior lateral transient patellar dislocation. The femoral trochlea appears shallow superiorly and the medial facet appears diminutive, indicating femoral trochlear dysplasia. There is near full-thickness chondromalacia affecting the articular cartilage along the lateral facet of the patella. No full-thickness defects are identified. The articular cartilage of the medial and lateral tibiofemoral compartment appears relatively spared.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The quadriceps and patellar tendons appear intact.ADDITIONAL
1. Findings indicating prior lateral transient patellar dislocation with bone contusions and complete disruption of the distal fibers of the medial retinaculum.2. Femoral trochlear dysplasia and edema within the superolateral aspect of Hoffa's fat pad can be seen in patients with patellofemoral instability.3. The tibial tubercle to trochlear groove distance and Insall Salvati ratio are within normal limits.4. Moderate size joint effusion. No definite loose bodies are identified.5. Chondromalacia affecting the patellofemoral articulation, however, no full-thickness or near full-thickness articular cartilage defects are seen.