Table of Contents
Advances in Orthopedic Surgery
Volume 2014 (2014), Article ID 302969, 5 pages
http://dx.doi.org/10.1155/2014/302969
Clinical Study

Clinical and Radiographic Outcomes with a Hydroxyapatite and Porous Coated Cup Design

Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA

Received 18 November 2013; Accepted 14 January 2014; Published 27 February 2014

Academic Editor: Neal L. Millar

Copyright © 2014 John Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Press-fit, hydroxyapatite-coated acetabular cup designs may offer a lower incidence of loosening and migration than older designs. Our study evaluated the initial clinical and radiographic success of a cementless acetabular shell in a large cohort of primary total hip arthroplasty (THA) patients. We queried our institution’s prospectively collected registry for a series of 771 primary THAs (695 patients) implanted with this cup by 4 high-volume arthroplasty surgeons. Of the 613 hips with minimum 2-year followup, average HHS (Harris Hip Score) was 93.6, WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index) was 87.6, and VAS (Visual Analog Scale) pain score was 1.2. While there was a 2% reoperation rate (12 hips), none of the cups were revised for aseptic loosening. No radiolucencies were found and there was no evidence of acetabular loosening. At early followup, this newer cementless acetabular cup implant design exhibits high survivorship and clinical success.