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The Journal of Bone and Joint Surgery 78:312-3 (1996)
© 1996 The Journal of Bone and Joint Surgery, Inc.

Correspondence

Correspondence

Charles A. Engh, M.D., Tony M. Keaveny, Ph.D and Donald L. Bartel, Ph.D.

TO THE EDITOR:

The article "Mechanical Consequences of Bone Ingrowth in a Hip Prosthesis Inserted without Cement" (77-A: 911–923, June 1995), by Keaveny and Bartel, was interesting and deserves comment. I applaud the authors' scientific rigor, but I believe that their conclusions could be considered in the context of clinical experience rather than solely on theoretical grounds. I should first point out that I profess no expertise in design or interpretation of finite element analysis or composite beam theory. I do, however, take exception to the statement "it is currently not possible ... to perform a rigorous statistical analysis of the long-term clinical efficacy of porous coating."

The stated goal was to identify groups of patients who, if treated with the extensively coated anatomic medullary locking prosthesis, would be prone to loss of bone or fracture of the stem, thus jeopardizing the hip replacement. My colleagues and I have been . . . [Full Text of this Article]


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