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Trabecular metal used for major bone loss in acetabular hip revision
Jonah Hebert Davies1, G Yves Laflamme, Josee Delisle
1Division of Orthopaedic Surgery, University of Montreal, Hôpital du Sacré-Coeur, Montreal, Quebec, Canada.
Insights
Trabecular metal acetabular components show promising outcomes in revision hip arthroplasty for patients with severe bone loss. These implants offer good clinical results and functional scores, despite major bone deficiencies.
Area of Science:
- Orthopedic surgery
- Biomaterials science
Background:
- Revision hip arthroplasty is complex, particularly with significant acetabular bone loss.
- Traditional implants may face challenges in achieving stable fixation in cases of major bone deficiency.
Purpose of the Study:
- To evaluate the clinical outcomes of using trabecular metal (TM) acetabular components in revision hip arthroplasty for patients with major acetabular bone deficiency.
- To assess the efficacy and safety of TM components in complex revision cases.
Main Methods:
- Retrospective review of 46 patients with Paprosky type IIc or III acetabular bone deficiency undergoing revision hip arthroplasty.
- Clinical outcomes assessed using Harris Hip Score, Western Ontario and McMaster Universities (WOMH) scores, and Short-Form 12 (SF-12).
- Mean follow-up duration of 50 months.
Main Results:
- Average Harris Hip Score of 78.2, indicating improved hip function.
- SF-12 scores were comparable to age-matched population averages.
- WOMH scores predominantly fell into the lower disability categories.
- Major complications included 1 infection, 2 dislocations, and 1 arterial bleeding.
Conclusions:
- Porous tantalum acetabular components demonstrate promising results in revision hip arthroplasty cases with severe acetabular bone loss.
- TM components provide a viable option for addressing significant bone deficiencies, leading to satisfactory functional outcomes.
Abstract:
The purpose of this study was to evaluate the outcome of trabecular metal (TM) acetabular components used in revision hip arthroplasty with major bone deficiency. We retrospectively reviewed the records of 46 patients undergoing revision hip arthroplasty with severe acetabular bone loss. Clinical outcomes were assessed using Harris Hip Score, Western Ontario and McMaster Universities, and Short-Form 12. Mean follow-up was 50 months. All patients had Paprosky type IIc or III acetabular bone deficiency. Major complications included 1 infection, 2 dislocations, and 1 arterial bleeding. Average Harris Hip Score was 78.2. Short-Form 12 scores were within population-based age-matched averages. Western Ontario and McMaster Universities scores were mainly in the 2 lowest disability categories. Porous tantalum shows promising results in revision arthroplasty with severe acetabular bone loss.
