18-year-old male patient with history of sickle cell disease and abnormal knee radiograph. MENISCI AND LIGAMENTS: The medial and lateral menisci are intact. The anterior cruciate ligament, posterior cruciate ligament, lateral collateral ligament, and medial collateral ligament complex are intact. The patellar retinacula are intact.BONE AND MARROW: Serpiginous low T1 signal intensity in the distal femoral metadiaphysis with central T2 hyperintensity. A similar appearing area is in the proximal tibial metadiaphysis that extends to the physis and approximately 2 mm into the epiphysis. Both of these areas demonstrate thick peripheral enhancement on postcontrast images.SYNOVIUM: No joint effusion or synovitis.MUSCULATURE: Musculature is normal in appearance.ADDITIONAL
Findings compatible with bone infarcts in the distal femur and proximal tibia.