Spatial Micromovements of Uncemented Femoral Components After Torsional Loads-Reference-Cited by-同舟云学术

Spatial Micromovements of Uncemented Femoral Components After Torsional Loads

Published:2002-12-01 Issue:6 Volume:124 Page:706-713
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Go¨rtz W.¹,Na¨gerl U. V.²,Na¨gerl H.³,Thomsen M.⁴

Affiliation:

1. Biomechanical Research Laboratory, Orthopaedic Surgery Hospital, University of Heidelberg, Schlierbacher Landstr. 200a, 69118 Heidelberg, Germany

2. Max-Planck Institute of Neurobiology, Am Klopferspitz 18A, 82152 Mu¨nchen-Martinsried, Germany

3. IV. Physical Institute, University of Go¨ttingen, Bunsenstr. 13-15, 37073 Go¨ttingen, Germany

4. Biomechanical Research Laboratory, Orthopaedic Surgery Hospital, University of Heidelberg, Schlierbacher Landstr. 200a, 69118 Heidelberg, Germany

Abstract

A novel method is presented which permits to assess implanted femoral components with regards to location of fixation and initial stability under cyclic torsional loads. The measurement apparatus tracks the spatial movement at several sites of stem and bone, allowing quantitative analysis of the micromotions and twisting of stem and bone, and the location of torque (force) transfer. Four types of prostheses were compared, which revealed striking differences in torque transfer. Our results for synthetic femurs are consistent with in vivo data on the osseointegration and radiolucensies observed for the stem types of this study. The method can be used to quantitatively compare various stem designs and implantation techniques.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/124/6/706/5551623/706_1.pdf

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