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The Journal of Bone and Joint Surgery (American) 84:709-710 (2002)
© 2002 The Journal of Bone and Joint Surgery, Inc.

Editorial

The Need to Account for Patient Activity When Evaluating the Results of Total Hip Arthroplasty with Survivorship Analysis

Frederick J. Dorey, PhD and Harlan C. Amstutz, MD

Frederick J. Dorey, PhD
Department of Orthopaedic Surgery, University of California at Los Angeles, School of Medicine, Los Angeles, California

Harlan C. Amstutz, MD
Joint Replacement Institute at Orthopaedic Hospital, Los Angeles, California

A commentary is available with the electronic versions of this article, on our web site (www.jbjs.org) and on our quarterly CD-ROM (call our subscription department, at 781-449-9780, to order the CD-ROM).

In 1980, Dobbs 1 introduced the statistical technique of survivorship analysis in the setting of total hip arthroplasty. We expanded upon the need for survivorship analysis in this setting in 1986 2 , and today survivorship analysis is the standard technique for any long-term statistical analysis of the results of total hip arthroplasty. As with any statistical technique, however, a proper evaluation can only be performed after accounting for all of the factors that may have contributed to implant failure.

This issue of The Journal contains an article by Dr. Crowther and Dr. Lachiewicz that discusses the excellent survival of a porous-coated acetabular component in patients who were less than fifty years old at the time of surgery. The results of total hip arthroplasty in younger patients are important because, in the literature published both prior to and following the use of survivorship analysis, patient age at the time of surgery has . . . [Full Text of this Article]


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