The Journal of Bone and Joint Surgery 82:1804 (2000)
© 2000 The Journal of Bone and Joint Surgery, Inc.
Wear in Total Hip and Knee Replacements
Ian H. Paling, B.Met., M.Met,
Thomas P. Schmalzried, M.D. and
John J. Callaghan, M.D.
Cyclamen Lodge, Private Road, Rodborough Common Stroud, Glos
GL5 5BT, United Kingdom
Corresponding author: Thomas P. Schmalzried, M.D.
Joint Replacement Institute, 2400 South Flower Street Los Angeles,
California 90007
To The Editor:
I read with interest the recent review by Schmalzried and Callaghan,
entitled "Current Concepts Review. Wear in Total Hip and Knee Replacements"
(81-A: 115-136, Jan. 1999).
In my opinion, one of the most important points raised by the
authors concerns the propensity of data that are published linking
clinical rates of wear, and indeed survivability, to a denominator of
time. The authors stress that "the wear of a prosthetic hip or knee
is a function of use or the number of cycles and not a function
of time in situ." The authors go on to report on investigations
they have performed, indicating that . . . [Full Text of this Article]

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