9-year-old male with bilateral knee pain on chronic steroids, concern for AVN MENISCI AND LIGAMENTS: The menisci are intact. The ACL, PCL, MCL, and lateral collateral complex are intact. The extensor mechanism is intact.BONE AND MARROW: The bones are diffusely demineralized consistent with an osteoporosis likely secondary to chronic steroids. In the proximal tibial diaphysis is a focal area of more severe osteoporosis. This focal area severe osteoporosis occupies nearly the entire volume of the proximal tibial diaphysis. No avascular necrosis or osteochondral defects are present. Focal area of low T1 signal along the medial aspect of the distal femoral metaphysis with corresponding high T2 signal likely represents a focal paraphyseal edema, which can be normal.SYNOVIUM: No significant joint effusion. The articular cartilage is intact.MUSCULATURE: Musculature appears moderately atrophic.ADDITIONAL
Diffuse demineralization with a focal area of more severe osteoporosis in the proximal tibial diaphysis without evidence of avascular necrosis or osteochondral defect.