Five to Ten-Year Results of the Birmingham Hip Resurfacing Implant in the U.S.: A Single Institution’s Experience

• Published in: Journal of bone and joint surgery. American volume 2018-11, Vol.100 (21), p.1879-1887
• Main Authors: Ford, Marcus C, Hellman, Michael D, Kazarian, Gregory S, Clohisy, John C, Nunley, Ryan M, Barrack, Robert L
• Format: Article
• Language: English
• ISSN: 0021-9355; 1535-1386
• DOI: 10.2106/JBJS.17.01525

BACKGROUND:International surgeon series and registry data have demonstrated positive outcomes and long-term survival of the Birmingham Hip Resurfacing (BHR) implant. We report the 5 to 10-year results from a single center in the U.S. METHODS:Three hundred and fourteen patients (360 hips) underwent surface replacement arthroplasty with use of the BHR implant and consented to study participation. Patient-reported outcomes and complication and revision data were collected at a minimum of 5 years of follow-up for 93% (324 of 350) of the hips in surviving patients. A matched-cohort analysis was used to compare clinical outcomes between use of the BHR and total hip arthroplasty. RESULTS:Mean modified Harris hip score (mHHS) and University of California, Los Angeles (UCLA) scores significantly improved postoperatively, to 89.9 and 8.0, respectively (p < 0.001). The Kaplan-Meier estimated rate of survival for all-cause revision was 97.2% (95% confidence interval [CI], 94.7% to 98.5%) and 93.8% (95% CI, 88.8% to 96.7%) at 5 and 10 years, respectively. In a subgroup analysis of patients fitting our current BHR inclusion criteria (males