Abstract

IntroductionThis retrospective study evaluated the outcomes of variable-angle locking compression plate, mesh plate, or footplate box fixation for posterior acetabular wall fractures. Patients and methodsThe study included nine patients with unstable posterior acetabular wall fractures who underwent internal fixation with the "spring-locking plate fixation method" between January 2015 and December 2019. Patient demographics, fracture classifications, surgical details, radiological and clinical evaluations, and complications were collected from electronic medical records. Statistical analyses were performed to assess the relationship between preoperative and postoperative dislocations. ResultsThe mean age of the patients was 46 years, and the majority were men (88.9%). Fracture types included posterior wall fractures and posterior column plus posterior wall fractures. The mean operative time was 246 min and the mean blood loss was 663 mL. The surgical approaches included the Kocher–Langenbeck, Ganz trochanteric flip, and transtrochanteric approaches. Variable-angle locking compression plate mesh plates and footplate box type implants were used for fixation. The mean preoperative dislocation was 23 mm, which was significantly reduced to 1 mm immediately post-operation and at the final observation. The bone fusion rate was 100% and radiological and clinical evaluations revealed favourable outcomes. Complications were minimal, with mild heterotopic ossification observed in four patients. ConclusionThe spring-locking plate fixation method demonstrated satisfactory outcomes for the treatment of posterior acetabular wall fractures. This technique provides rigid fixation. Furthermore, the use of variable-angle locking screws minimizes the risk of intra-articular perforations. Despite limitations such as a small sample size and the absence of a control group, the results suggest that the spring-locking plate fixation method may be valuable in managing these fractures.

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