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Numerous risk factors associated with THA re-revision
Recently published data demonstrated age, the experience level of the surgeon, implant fixation and bearing surfaces significantly impacted the risk of re-revision after total hip arthroplasty.
Researchers retrospectively evaluated 629 patients (mean age: 57 years) from a total joint replacement registry who underwent revision total hip arthroplasty (THA) between April 1, 2001, and Dec. 31, 2010.
To determine the primary study’s point of interest of re-revision THA, the researchers evaluated patient risk factors, implant risk factors and surgeon risk factors and utilized a multivariable Cox proportional hazards model.
Sixty-three patients required re-revision THA, and 34 patients died before re-revision. Results showed implant survival after 5-years of revision THA was 86.8%. After patients’ age increased by 10 years, the researchers found the hazard ratio for re-revision decreased by a factor of 0.72. Revision risk decreased by a factor of 0.93 for every five surgical procedures performed, according to the researchers.
Two factors that were found to increase re-revision risks included a hybrid or cemented stem in relation to an uncemented stem, and the metal on constrained bearing surface in relation to the metal on highly cross-linked polyethylene bearing surface.
At the first revision, most revised or retained implants were uncemented; only femoral components were replaced and were metal on highly cross-linked polyethylene, according to the researchers. – by Monica Jaramillo
Disclosures: The researchers report no relevant financial disclosures.