Asymmetric motion distribution between components of a mobile-core lumbar disc prosthesis: an explanation of unequal wear distribution in explanted CHARITÉ polyethylene cores.
Title | Asymmetric motion distribution between components of a mobile-core lumbar disc prosthesis: an explanation of unequal wear distribution in explanted CHARITÉ polyethylene cores. |
Publication Type | Journal Article |
Year of Publication | 2012 |
Authors | Patwardhan, A. G., Havey R. M., Wharton N. D., Tsitsopoulos P. P., Newman P., Carandang G., & Voronov L. I. |
Journal | J Bone Joint Surg Am |
Volume | 94 |
Issue | 9 |
Pagination | 846-54 |
Date Published | 2012 May 02 |
ISSN | 1535-1386 |
Keywords | Adult, Cadaver, Equipment Failure Analysis, Female, Humans, Intervertebral Disc, Joint Prosthesis, Lumbar Vertebrae, Male, Middle Aged, Motion, Polyethylene, Range of Motion, Articular, Weight-Bearing |
Abstract | BACKGROUND: The biconvex mobile core of the CHARITÉ lumbar disc prosthesis forms two joints (spherical bearings) with the metal end plates. We quantified the intra-prosthesis motion to test the hypothesis that the total prosthesis motion would not be equally distributed between the two bearings of implanted CHARITÉ discs, which might explain the unequal wear distribution reported in explanted cores. |
DOI | 10.2106/JBJS.J.00638 |
Alternate Journal | J Bone Joint Surg Am |
PubMed ID | 22552675 |