Treatment of unstable pelvic fractures with double INFIX.

Background: This study investigated the clinical efficacy of Double INFIX for the treatment of unstable pelvic fractures.

Methods: We performed a retrospective analysis of 23 patients with unstable pelvic fractures treated using the Double INFIX minimally invasive technique. The cohort included five cases of Tile B1 type, eight cases of B2 type, six cases of B3 type, three cases of C1 type and one case of type C2. Pre- and postoperative evaluations included standardised pelvic serial films and three-dimensional CT scans. Key observational indicators were fracture reduction quality (assessed using Matta's criteria), fracture healing, functional recovery (evaluated with the Majeed function assessment criteria), and incidence of complications.

Results: The mean follow-up duration was 24.48 ± 1.78 months. The average fracture healing time was 4.00 ± 1.41 months, and the average time for removal of fixation was 7.43 ± 1.75 months. Repeat imaging at 12 months postoperatively using Matta's criteria showed eight cases with excellent results (52.17%), 13 cases with good results (34.78%), three cases with fair results (13.04%), and no cases with poor results. The combined excellent and good rate was 86.96%, whereas the fair rate was 13.04%. The average Majeed hip joint function score at the final follow-up was 95.04 ± 1.72. Postoperative complications included meralgia paresthetica in two cases (8.7%) and sacrococcygeal discomfort in three patients when lying flat.

Conclusion: Double INFIX is a minimally invasive treatment technique with adequate clinical efficacy for managing unstable pelvic fractures.