Items tagged “avascular necrosis”

Köhler disease is an eponymous term referring to childhood-onset osteonecrosis of the navicular in the foot. Müeller-Weiss syndrome is the adult counterpart of navicular osteonecrosis 4,5. Epidemiology Köhler disease typically presents in the pediatric population (4-6 years of age) and there i...

Waldenström sign is the increased distance between the pelvic teardrop and the femoral head. It is a highly specific sign of a hip joint effusion. Radiographic features Plain radiograph >11 mm total distance or >2 mm difference compared to contralateral hip 1,2 measured between the lateral a...