Introduction: The gold standard of Acetabular fractures treatment is open reduction and internal fixation (ORIF). Our purpose is to assess the short- to medium-term outcomes and complications of surgically treated acetabular fractures. We analysed factors influencing clinical outcomes, incidence of complications and predictors of conversion in total hip arthroplasty (THA).
Materials And Methods: We retrospectively analysed 102 patients with acetabular fracture surgically treated between December 2017 and September 2020. We evaluated the quality of reduction with x-ray measuring residual displacement, classified into 3 groups (Matta Radiological Score). At the final follow-up, radiographs were graded according to Matta's Radiological Outcome Grading, and the clinical outcomes were graded using Oxford Hip Score (OHS).
Results: 62 patients were enrolled. OHS was influenced by quality of reduction (p = 0.031), injury severity score (ISS) (p = 0.003) and BMI > 30 (p < 0.0001). The late sequelae were heterotopic ossification (HO) in 13 patients, osteoarthritis (OA) in 22 and avascular necrosis (AVN) in 4. HO was significantly affected by posterior approach and ISS > 15. The analysis showed a correlation between AVN and posterior hip dislocation. OA had a correlation with postoperative quality of reduction (p = 0.014). Eight patients required THA with a significant correlation between THA and posterior dislocation, isolated posterior wall fracture and ISS > 15.
Conclusion: A high rate of patients with acetabular fractures still develop complications and require THA. Identification of predictors for poor outcome may help to inform surgical decision-making regarding options of plate osteosynthesis or 'Fix and Replace', to avoid poor outcomes and early revision surgery.
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