[Problems of differentiating sacral fractures and fissure formations in the sacrum].

It is shown on the basis of two observations that computed tomography represents a valuable additional means to clarify the diagnosis of congenital and traumatic changes in the pelvis, especially the sacrum and vertebral column. The article explains the differential diagnosis between congenital fissures of the pelvic arch and fractures by means of computed tomography. This is illustrated with the help of x-ray morphologic criteria.