Isolated sacral dislocation in a 4-year-old child.

Sacral dislocation is an uncommon form of injury in childhood. A 4-year-old girl who was injured in a motor vehicle accident was seen in the emergency room. On physical examination, ecchymosis and tenderness in the abdomen and sacral region was identified. Radiographs revealed no pelvic pathology. CT was performed owing to the patient's sacral and abdominal tenderness. Dislocations were identified at the sacral third and fourth vertebrae without any fractures. The patient was discharged 10 days later with a recommendation for 6 weeks bed rest and an appointment for an outpatient follow-up examination. At the post-traumatic second-month examination, the patient was walking normally. In the radiograph and MRI that were taken a year later, the dislocation was observed to have fused completely, and no pressure was seen on any anatomical structure. No functional pathology was identified during the interview with the family.