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A reliable DEXA measurement technique for metal-on-metal hip resurfacing

Lookup NU author(s): Professor Andrew McCaskie


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Introduction: Dual energy X-ray absorptiometry (DEXA) has been used to measure bone mineral density (BMD) around total hip prostheses. With the recent increase in the use of metal-on-metal hip resurfacing, such as the Birmingham hip resurfacing (BHR), we aimed to produce a reliable method of measuring bone density around a metal-on-metal hip resurfacing. Methods: We performed DEXA scans on 5 patients (7 BHRs), who had undergone resurfacing with the BHR within the past 2 years. A zonal reporting technique was devised and evaluated. Results: The intraclass correlation (i.e. the correlation between any two assessments of one region of interest) was 0.997, with an overall coefficient of variation of 5%. Interpretation: We have designed and demonstrated a safe, noninvasive and highly reproducible method for interpreting and reporting the results of DEXA scanning of BHR implants in vivo. We will now use this method to prospectively study our BHR population to assess the changes in bone density following BHR within the femoral neck. This method may add to the current techniques available for detection of impending failure. Copyright © Taylor & Francis 2004.

Publication metadata

Author(s): Murray JRD, Cooke NJ, Rawlings D, Holland JP, McCaskie AW

Publication type: Article

Publication status: Published

Journal: Acta Orthopaedica

Year: 2005

Volume: 76

Issue: 2

Pages: 177-181

ISSN (print): 1745-3674

ISSN (electronic): 1745-3682

Publisher: Informa Healthcare


DOI: 10.1080/00016470510030544

PubMed id: 16097541


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