Mathematical Modelling Of Micromotion In Artificial Joints

James H. Verner; Urs P. Wyss

doi:10.1117/12.950470

14 April 1989 Mathematical Modelling Of Micromotion In Artificial Joints

James H. Verner, Urs P. Wyss

Author Affiliations +

Proceedings Volume 1030, Biostereometrics '88; (1989) https://doi.org/10.1117/12.950470
Event: Biostereometrics '88: Spatial and Spatiotemporal Analysis of Biological Form and Function, 1988, Basel, Switzerland

Abstract

In spite of care taken in endoprosthetic joint replacement, migration of prosthetic components from fractions of a mm to one cm or more can occur. To detect such "micromotion" in a clinical environment, it is proposed that the positions of radiopaque markers implanted in both the prosthesis and the host bone and positions of their images on two or more conventional X-rays be used in a mathematical model. One implementation illustrates that estimates to within 0.5 mm are possible using prototype models.

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James H. Verner and Urs P. Wyss "Mathematical Modelling Of Micromotion In Artificial Joints", Proc. SPIE 1030, Biostereometrics '88, (14 April 1989); https://doi.org/10.1117/12.950470

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