The use of a hydroxyapatite-coated primary stem in revision total hip arthroplasty.

Authors:
Stephen J Kelly
Stephen J Kelly
University of Technology Sydney
Ultimo | Australia
Stephen J Incavo
Stephen J Incavo
Houston Methodist Hospital
Houston | United States
Bruce Beynnon
Bruce Beynnon
McClure Musculoskeletal Research Center

J Arthroplasty 2006 Jan;21(1):64-71

Department of Orthopaedics and Rehabilitation, McClure Musculoskeletal Research Center, University of Vermont, Burlington, Vermont 05405-0084, USA.

Proximal ingrowth of femoral components in total hip arthroplasty (THA) is desirable because it minimizes proximal stress shielding associated with distal ingrowth stems and maximizes bone stock. This is a retrospective evaluation of initial results of revision THA using a proximally hydroxyapatite-coated femoral stem nominally designed for primary use. Patients requiring femoral stem revision were included if they had sufficient femoral bone stock to support a proximally fixed prosthesis (n = 33). This represents 53% of the femoral revisions performed during the period of the study. The average follow-up was 5 years (range 48-88 months). The mean Harris hip and Oxford hip scores were 86.5 and 25.2, respectively. Radiographically, 100% of the stems demonstrated bone ingrowth fixation. These results are superior to previous reports of primary cementless stems for revision THA. The use of a cementless nonmodular implant provides a viable option in some patients undergoing revision THA.

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http://dx.doi.org/10.1016/j.arth.2004.11.013DOI Listing

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January 2006
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