Abstract
Background
Hip resurfacing is an alternative to total hip arthroplasty.
Questions/Purpose
We aimed to compare an experienced hip surgeon’s initial clinical results of hip resurfacing with a new cementless total hip arthroplasty (THA).
Methods
The first 55 consecutive hip resurfacing arthroplasties were compared to 100 consecutive cementless THAs using a cylindrical tapered femoral stem. The learning curve between the two procedures was compared utilizing the incidence of reoperation, complications, Harris Hip Scores (HHS), and implant survivorship.
Results
The reoperation rate was significantly higher (p = 0.019) for hip resurfacing (14.5%) versus THA (4%). The overall complication rate between the two groups was not significantly different (p = 0.398). Preoperative HHS were similar between the two groups (p = 0.2). The final mean HHS was similar in both the resurfacing and THA groups (96 vs. 98.3, respectively, p < 0.65). Kaplan–Meier survival analysis with an endpoint of reoperation suggests complications occurred earlier in the resurfacing group versus the THA group (log-rank test, p = 0.007).
Conclusions
In comparison to our initial experience with a cementless THA stem, operative complications occur earlier and more often after hip resurfacing during the learning period. The clinical outcomes in both groups however are similar at 5 year follow-up.
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Acknowledgments
We would like to acknowledge Sam Akhavan MD for his assistance with the study design. We would like to acknowledge Patty Conroy-Smith for her assistance with clinical data.
Disclosures
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Conflict of Interest:
Justin Arndt, BS and Glenn D. Wera, MD have declared that they have no conflict of interest. Victor M. Goldberg MD is a paid consultant for Zimmer (Warsaw, Indiana) and Wright Medical (Arlington, TN), outside the work.
Human/Animal Rights:
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5).
Informed Consent:
Informed consent was waived for all patients included in the study.
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Work was performed at University Hospitals Case Medical Center; Case Western Reserve University Cleveland, OH.
Level of Evidence: Therapeutic Study Level III. Please see Levels of Evidence for a complete description.
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Arndt, J.M., Wera, G.D. & Goldberg, V.M. An Initial Experience with Hip Resurfacing Versus Cementless Total Hip Arthroplasty. HSS Jrnl 9, 145–149 (2013). https://doi.org/10.1007/s11420-013-9333-0
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DOI: https://doi.org/10.1007/s11420-013-9333-0