Anterior subcutaneous internal fixator (INFIX) versus plate fixation for anterior ring injury in Tile C pelvic fractures: a retrospective study.

Objectives: . The purpose of this study was to compare the reduction effect and clinical outcomes of anterior subcutaneous internal fixation (INFIX) and steel plate-screw internal fixation in the treatment of anterior ring injury in Tile C pelvic fractures.

Methods: . In this retrospective study, the clinical outcomes of 46 patients treated using INFIX and 44 patients treated with steel plate-screw internal fixation were analyzed and compared. All patients underwent anterior and posterior fixation. The Matta imaging scoring system was used to evaluate the postoperative reduction accuracy; the Majeed scoring system was applied to obtain functional outcomes in clinical follow-up. All potential complications were identified and evaluated accordingly.

Results: Both groups of patients were followed up for a period of 13-36 months, with an average of 27 months. The procedure time and blood loss in the INFIX group were significantly lower than those in the plate group(t = - 2.327, P = 0.023;t = - 4.053, P = 0.000; there was no statistically significant difference in the Majeed score and Matta score between the two groups after surgery (P > 0.05).

Conclusions: . INFIX treatment for anterior ring injury in Tile C pelvic fractures can achieve good therapeutic effects. Compared to internal fixation with plates and screws, it has advantages such as shorter surgical time and less blood loss. INFIX may be more suitable for obese patients, young women of childbearing age, or patients with urinary system injuries.