title: An initial experience with hip resurfacing versus cementless total hip arthroplasty.
abstract: BACKGROUND
  Hip resurfacing is an alternative to total hip arthroplasty.
  
  
  OBJECTIVE
  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.
authors.affiliation: Case Western Reserve University, University Hospitals Case Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106 USA.
authors.forename: Justin Michael
authors.initials: JM
authors.lastname: Arndt
authors.affiliation: Case Western Reserve University, University Hospitals Case Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106 USA.
authors.forename: Glenn D
authors.initials: GD
authors.lastname: Wera
authors.affiliation: Case Western Reserve University, University Hospitals Case Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106 USA.
authors.forename: Victor M
authors.initials: VM
authors.lastname: Goldberg
keywords: hip resurfacing; learning curve; total hip arthroplasty