Hip contact forces in asymptomatic total hip replacement patients differ from normal healthy individuals: implications for preclinical testing

Article


Li, J., Redmond, A., Jin, Z., Fisher, J., Stone, M. and Stewart, T. 2014. Hip contact forces in asymptomatic total hip replacement patients differ from normal healthy individuals: implications for preclinical testing. Clinical Biomechanics. 29 (7), pp. 747-751. https://doi.org/10.1016/j.clinbiomech.2014.06.005
TypeArticle
TitleHip contact forces in asymptomatic total hip replacement patients differ from normal healthy individuals: implications for preclinical testing
AuthorsLi, J., Redmond, A., Jin, Z., Fisher, J., Stone, M. and Stewart, T.
Abstract

BACKGROUND
Preclinical durability testing of hip replacement implants is standardised by ISO-14242-1 (2002) which is based on historical inverse dynamics analysis using data obtained from a small sample of normal healthy individuals. It has not been established whether loading cycles derived from normal healthy individuals are representative of loading cycles occurring in patients following total hip replacement.
METHODS
Hip joint kinematics and hip contact forces derived from multibody modelling of forces during normal walking were obtained for 15 asymptomatic total hip replacement patients and compared to 38 normal healthy individuals and to the ISO standard for pre-clinical testing.
FINDINGS
Hip kinematics in the total hip replacement patients were comparable to the ISO data and the hip contact force in the normal healthy group was also comparable to the ISO cycles. Hip contact forces derived from the asymptomatic total hip replacement patients were comparable for the first part of the stance period but exhibited 30% lower peak loads at toe-off.
INTERPRETATION
Although the ISO standard provides a representative kinematic cycle, the findings call into question whether the hip joint contact forces in the ISO standard are representative of those occurring in the joint following total hip replacement.

Research GroupBiophysics and Bioengineering group
PublisherElsevier
JournalClinical Biomechanics
ISSN0268-0033
Publication dates
Online14 Jun 2014
Print01 Aug 2014
Publication process dates
Deposited05 Jun 2017
Accepted05 Jun 2014
Output statusPublished
Accepted author manuscript
License
Copyright Statement

© 2014. This author accepted manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Digital Object Identifier (DOI)https://doi.org/10.1016/j.clinbiomech.2014.06.005
LanguageEnglish
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