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The Journal of Bone and Joint Surgery (American) 84:S81-S89 (2002)
© 2002 The Journal of Bone and Joint Surgery, Inc.

Scientific Exhibits

Why a Taper?

Thomas H. Mallory, MD, FACS, Adolph V. Lombardi, Jr., MD, FACS, Joseph R. Leith, MD, Hiroshi Fujita, MD, Jodi F. Hartman, MS, Susan G. Capps, PhD, Cheryl A. Kefauver, RN, Joanne B. Adams, BFA and G. Christian Vorys


Corresponding author: Thomas H. Mallory, MD, FACS
Joint Implant Surgeons, 720 East Broad Street, Columbus, OH 43215. E-mail address: malloryth@ortholink.net

The authors did not receive grants or outside funding in support of their research of preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.

The first 150 words of the full text of this article appear below.


   Introduction
 
The purpose of this study was to substantiate the continued use of a cementless plasma-sprayed, proximal-to-distal dual-tapered-geometry femoral-component design on the basis of long-term clinical and radiographic evidence. This justification is particularly pertinent in cementless total hip arthroplasty, in which bone-stock preservation and prosthetic-host compatibility are essential. A series of 101 patients managed with 120 primary arthroplasties who had a minimum follow-up of ten years was retrospectively reviewed. A meta-analysis of published reports of cementless tapered femoral components with a minimum follow-up of five years then was performed to validate the results of this review. At a mean follow-up of 12.2 years, a mean 38-point improvement in the Harris hip score was observed. Thigh pain was mild or absent after 97.5% (117) of the 120 arthroplasties. Distal femoral osteolysis was observed after 1.7% (two). Three femoral components had been revised secondary to aseptic loosening, yielding a 97.5% survivorship.

Tapered geometries . . . [Full Text of this Article]


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