Total hip arthroplasty with bone grafts for protrusio acetabuli

Julian Dutka, Paweł Sosin, Paweł Skowronek, Michał Skowronek
Ortopedia, Traumatologia, Rehabilitacja 2011, 13 (5): 469-77

BACKGROUND: This retrospective cohort study analyses the long-term outcomes of total hip arthroplasty (THA) in arthritis patients with various forms of acetabular protrusion.

MATERIAL: We analyse 135 consecutive cemented total hip arthroplasties in 127 patients. Mean age of the patients was 55.2 years (range: 30-72 years). The study group consisted of 119 women and 16 men who were followed up for a mean of 12.7 years. Mean preoperative function was poor, with a Harris score of 28.0 points.

METHODS: Clinical evaluation utilized the Harris hip score, and radiographic assessment relied on the criteria of the Joint Committee of the Hip Society, AAOS and SICOT.

RESULTS: Clinical outcomes of the study group were as follows: excellent in 35 (25.9%), good in 78 (57.8%), fair in 17 (12.6%), and poor in 5 (3.7%). The mean postoperative Harris score was 86.6 points. The radiographic outcomes were excellent in 47 (34.8%), good in 60 (44.5%), fair in 18 (13.3%), and poor in 10 hips (7.4%). Loosening of both components was observed in 6 hips and of the acetabular component in 4 hips. Complications other than aseptic loosening were observed in 25 (18.5%) hips.

CONCLUSIONS: Implant survival following THA in arthritis with acetabular protrusion depends mainly on proper bone stock reconstruction. 80-85% patients after THA with acetabular bone stock reconstruction achieved very good and good results following an average of 12 years of follow-up. Patients with autogenic bone grafts achieved better outcomes. There was no substantial effect of aetiology, type of endoprosthesis, grade of acetabulum migration on the final outcome.

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