Intra-articular anterior inferior iliac spine avulsion with hip instability: A retrospective study.

BACKGROUND

Intraarticular anteroinferior iliac spine (AIIS) avulsion fractures combined with hip dislocation are infrequently reported in medical literature. This study aims to present the outcomes of surgical treatment for this rare type of injury.

METHODS

We retrospectively analyzed six cases of AIIS avulsion fracture with hip dislocation treated surgically. All patients underwent emergency hip reduction under sedation followed by open reduction and internal fixation using 4 mm cannulated screws through the iliofemoral approach.

RESULTS

After an average follow-up period of 50 months, all fractures healed. Clinically, four patients were rated as having an excellent outcome and two as good, according to the Harris Hip Score. Radiological assessment using Matta's grading system showed excellent results in five patients and good in one. All patients were able to resume their pre-injury activity levels within six months post-surgery.

CONCLUSION

Surgical fixation of AIIS avulsion fractures with associated hip instability demonstrates favourable outcomes, ranging from good to excellent, in both clinical and radiological assessments at medium-term follow-up. This suggests that surgical intervention is a viable option for managing such injuries.