[Pelvic injuries caused by bucking horses].

We report on 3 male patients aged 57, 47, and 53, who each sustained an unstable straddle injury during low-energy pelvic trauma while horseback riding. All 3 patients were haemodynamically stable; radiography revealed diastasis of the pubic symphysis in each case. In two patients, the sacroiliac joints were intact but the third patient showed widening of the right sacroiliac joint. In this patient, the pelvis was initially fixated with osteosynthesis screws and dynamic compression plates; however, arthrodesis of the right sacroiliac joint was performed due to its non-union one year after the injury. Fractures of the pelvic ring are relatively rare and are typically associated with high-energy trauma. Immediate surgical treatment is necessary for patients with fractures of the pelvic ring for the stabilisation of haemorrhagic shock, identification of soft-tissue injuries and fixation of the pelvis.