[Sacroiliac distorsion or subluxation--a medically established concept? X-ray diagnosis--bone scintigraphy].

50 patients with complaints in the region of the sacroiliacal joints and the hip, but negative radiographs following injury to the pelvis were investigated by bone scan. Scintigraphic diagnosis always showed involvement of the pelvis ring other than the apparent fractures. Together with the clinical symptoms scintigraphic findings are interpreted as sacroiliacal strain or subluxation. Additional injuries to the acetabulum and to the lumbosacral joints may be present. The patients' complaints are explained, the injuries are localized and documented.