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- Talk
- 22/09/2022
- UK
Long-Term Implant Survival Following Arthroplasty for Fractured Neck of Femur: An Analysis of Commonly Used Prosthesis Constructs Using Australian National Joint Registry Data
Description
The presentation by Ben Tyas focuses on a study investigating the long-term survival rates of hip hemiarthroplasty constructs, particularly among patients with proximal femoral fractures. Ben introduces himself as an orthopedic trainee collaborating with arthroplasty surgeons and the Australian Orthopedic Association on this valuable research. He emphasizes the rising incidence of hip fractures and the diversity of hemiarthroplasty options in the UK, noting the unclear clinical benefits of more expensive modular designs over simpler, cost-effective options.
The study draws on extensive data from the Australian Orthopedic Association National Joint Replacement Registry, covering hemiarthroplasties from 1999 to December 2020. With a total of 41,949 hemiarthroplasties analyzed, the Exeter stem with a Unitrax head emerged as the most frequently employed construct. The research establishes the cobalt-chrome Thompson's as the benchmark for assessing 10-year cumulative revision rates. Key findings highlight that while the Exeter stem with a bipolar head shows lower revisions only after 2.5 years, the titanium Thompsons demonstrated substantially higher revision rates compared to cobalt-chrome counterparts.
Further, sub-analysis reveals no difference in revision rates for patients over 80, while in younger patients, the Exeter bipolar head indicates a significant advantage after one year. Visual aids illustrate the survival and revision rates across various implants, underpinning the potential influence of patient frailty on implant choice. Ultimately, the study advocates for the cobalt-chrome Thompsons as the most economical option for older patients, while suggesting the Exeter Bipolar hemiarthroplasty may be beneficial for younger patients expected to live longer.