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Published on: September 7, 2022
Management of hip instability with a cemented, constrained acetabular component.
Josh Bakker-Dyos1, Matthew Moran
1Department of Orthopaedic Surgery, Royal Infirmary of Edinburgh, Edinburgh, UK.
Summary
Cementing constrained acetabular components offers good mid-term outcomes for hip replacement patients at high risk of dislocation. This approach helps manage instability and improve patient function after hip surgery.
Area of Science:
- Orthopedic Surgery
- Biomaterials Engineering
- Reconstructive Surgery
Background:
- Hip instability is a significant complication following hip replacement surgery.
- Recurrent or potential instability necessitates advanced treatment strategies.
- Constrained acetabular components offer enhanced stability.
Purpose of the Study:
- To evaluate the efficacy of cemented constrained acetabular components for managing hip instability.
- To assess the mid-term clinical and radiological outcomes of this surgical technique.
- To determine the survivorship and functional impact on patients undergoing this procedure.
Main Methods:
- A retrospective review of 110 operations in 109 patients over seven years.
- Clinical and radiological follow-up assessments were performed.
- Patient-reported outcomes were measured using the Oxford Hip Score (OHS) and SF-12 questionnaires.
Main Results:
- Four failures occurred, necessitating three revisions, with a 5-year survivorship of 90%.
- Mean follow-up was 2.9 years for the 100 patients with available data.
- Post-operative mean OHS was 33, SF-12 PCS was 34, and SF-12 MCS was 52.
Conclusions:
- Cemented constrained acetabular components provide satisfactory mid-term results for patients at high risk of hip dislocation.
- This technique appears effective in improving function and quality of life in this patient cohort.
- Further long-term studies are warranted to confirm durability.
