Sacroiliac joint dislocation in 11 years old boy treated by open reduction and internal fixation.

Pelvic fractures in children are relatively rare, especially unstable pelvic ring disruptions. Generally, nonoperative treatment has been recommended for children with these injuries because healing is rapid and remodeling extensive in children. Treatment generally is a period of recumbency until the fractures heal, followed by gradual weight bearing. Various methods of operative treatment were advised by some authors. They reported a higher incidence of residual problems after pelvic disruption such as malunion, hemipelvic undergrowth, low back pain and leg length discrepancy. These authors are of opinion, that principles of treatment should not differ from the treatment of adults if the pelvis is unstable and if there is significant displacement. We describe a case of a vertically unstable pelvic ring injury with sacroiliac joint dislocation and limb length discrepancy in 11 year old boy. Patient was received for treatment 14 days after trauma. He was treated by open reduction from anterior approach and percutaneous screw fixation. In one year follow-up he has very good functional result.