Elsevier

The Journal of Arthroplasty

Volume 15, Issue 2, February 2000, Pages 200-204
The Journal of Arthroplasty

The accuracy of assessing total hip arthroplasty outcomes: A prospective correlation study of walking ability and 2 validated measurement devices

https://doi.org/10.1016/S0883-5403(00)90242-0Get rights and content

Abstract

The Western Ontario and McMaster University Osteoarthritis Index (WOMAC) and the SF-36 are used to assess subjective outcome after total hip arthroplasty (THA). Although these indices have been validated, neither the WOMAC nor the SF-36 has been tested for accuracy against objective data in this clinical setting. Thirty osteoarthritic patients undergoing elective primary THA were subjectively evaluated preoperatively and 1 year posteoperatively with the WOMAC and the SF-36 and objectively evaluated at the same interval with basic stride analysis and the 6-minute walk test. Correlation analysis of the subjective and objective data (both perioperative improvement and postoperative absolute scores) yielded Pearson coefficients of r = 0.05–0.81. This work demonstrates a sound statistical relationship between walking ability and the functional aspects of the WOMAC and the SF-36, supporting the use of these instruments in assessing the functional outcome after THA.

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    No benefits or funds were received in support of this study.

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