An Official Journal of Polish Society of Orthopaedics and Traumatology
ISSN:1897-2276
e-ISSN: 2449-9145
Institute of Mechanics and Computational Mechanics, Gottfried Wilhelm Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
Original Article
Comparison of numerical results of bone remodelling and clinical observations in short-stem hip-jointprosthesis
Author(s):
Ulrich Wiebking*, Bastian Ebbecke, Thomas Gösling, Udo Nackenhorst and Christian Krettek
Background: Investigations of the density distribution of bone caused by implants make predictions in bone remodelling possible. For the execution of these analyses, a method is presented with finite element calculation.
Methods: A biophysical model based upon a finite-element calculation is examined with numerical calculations of short-stemmed (Mayo and Spiron), uncemented prostheses. Changes in bone mineral density -- measured over a period of 5 years in 100 patients after total hip replacement, -- were used as reference for the quantitative check calculations. The developed algorithm underlying these FE-calculations was subjected to an application test, and both an approved and new short-stemmed artificial limb system regarding its density distribution is simultaneously examined.
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