Complications of temporary and definitive external fixation of pelvic ring injuries

To determine the incidence of complications of external fixation in pelvic ring injuries, comparing fixator use for temporary and definitive treatment. Retrospective case-note review. A regional centre for pelvic trauma in the UK. 100 consecutive patients. All patients were treated with pelvic external fixation for a pelvic ring injury. In 52 patients, external fixation was intended for use as the definitive treatment of the pelvic ring injury and was maintained for a mean duration of 60 days (17–113). In 48 patients, it was used temporarily for a mean duration of 8 days (1–20) before internal fixation of the pelvic ring. The complication rate for definitive and temporary fixators was 62 and 21%, respectively. Pin-site infection occurred in 50% of definitive fixators and 13% of temporary fixators but rarely led to more serious complications. In five patients, the definitive management was changed as a result of a complication of the external fixator. The commonest cause for revision of either fixator was aseptic pin loosening. Revision for loose pins in eight patients was associated with the use of two pins in each iliac crest rather than three. The temporary use of external fixation is safe and effective, but use for definitive treatment is associated with a high rate of infection and aseptic pin loosening.