Reason: pain, swelling History: pain, swelling MENISCI: The medial and lateral meniscus appear intact.ARTICULAR CARTILAGE AND BONE: Again seen is an elongated dysmorphic and slightly high riding patella appearing similar to the prior study. There is subjective thinning of the articular cartilage along the patellofemoral articulation with areas along the lateral facet of the femoral trochlea completely devoid of articular cartilage. There is subchondral cyst formation within the lateral facet of the femoral trochlea. There is increased bone marrow signal abnormality within the medial and inferior pole of the patella on fluid sensitive sequences which is nonspecific but could conceivably represent a direct bone contusion.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Osteoarthritis of the knee as well as findings consistent with the known history of cerebral palsy.2. Bone marrow signal abnormality within the medial aspect of the patella may reflect a direct bone contusion in the correct clinical context. Nonspecific subcutaneous edema most pronounced along the medial retinaculum.