Abstract
Introduction
We report on the outcome of a cemented flanged acetabular component at a minimum of 10 years post-operatively.
Patients/Materials & Methods
Two hundred and three hips were reviewed in 194 consecutive patients who underwent primary total hip arthroplasty using this implant. Cases with acetabular defects requiring bone grafting were excluded. Functional and radiological data were prospectively recorded.
Results
Eight hips were revised, 66 hips were implanted in patients who died prior to their 10-year review and 129 hips remain in-situ at a minimum of 10 years. Reasons for revision were periprosthetic fracture due to trauma in 4 cases, recurrent dislocation in 2 cases, infection in 1 case and on-going pain in 1 case (in which infection was suspected but excluded). No hips were revised for aseptic loosening. Oxford and Harris hip scores demonstrated significant clinical improvement. Sixty four percent of the acetabular components were free of lucent lines. In the remainder, the vast majority exhibited lucencies in zone 1 only. Kaplan-Meier survivorship for aseptic loosening was 100% at 12.5 years and for all causes was 97.8% at 12.5 years (95% CI 95.6% – 100%) with 40 cases remaining at risk.
Discussion
Data from our study adds further weight to the evidence from joint registries as to the merits of cemented acetabular components in primary THR.
Conclusion
The clinical, radiological and survivorship outcomes of this component are excellent.
