[Significance of computerized tomography in the diagnosis and therapy of fractures of the posterior pelvic ring and hip joint].

Conventional röntgenologic examinations of fifty patients with posttraumatic pelvic bone injuries were compared with computertomographic examinations. The major advantage of computertomography of the pelvis is in our view the more precise evaluation of injuries of the dorsal pelvic ring. Almost fifty percent of the fractures of the sacrum and two thirds of the injuries of the iliosacral joint in our series could not be diagnosed on conventional examinations. Computertomography of fractures of the sacrum and fractures of the acetabulum give us important informations about the extension of the fracture, its dislocation, its degree of instability and accompanying soft tissue injuries. So planning of operative treatment becomes much easier.