106 cases of pelvic fracture and blunt abdominal trauma are reported and relationships between type of fracture, associated lesions and prognosis assessed. The presence of associated lesions, with the exception of urologic types, would appear to be correlated to the extent and prevalent application site of the trauma rather than to fracture morphology. The prognosis for patients with pelvic fractures is related to the frequency of associated lesions of intra-abdominal viscera and urological or retroperitoneal vascular structures.