Influence of femoral anteversion on proximal femoral loading: measurement and simulation in four patients
Influence of femoral anteversion on proximal femoral loading: measurement and simulation in four patients
Objective
The aim of this study was to determine the loading of the proximal femur during daily activities and to quantify the influence of femoral anteversion.
Design
This study combined experimental and analytical approaches to determine the in vivo loading at the hip joint. A numerical musculo-skeletal model was validated against measured in vivo hip contact forces and then used to analyse the influence of anteversion on the loading conditions in the femur.
Background
Musculo-skeletal loading of long bones is essential for joint replacement and fracture healing. Although joint contact forces have previously been measured in selected patients, the interaction between femoral anteversion and the associated musculo-skeletal loading environment remains unknown.
Methods
The gait of four patients with force measuring hip prostheses was analysed during walking and stair-climbing. Musculo-skeletal loading was determined using individual numerical models by minimising the sum of the muscle forces. RESULTS: Experimentally and numerically determined hip contact forces agreed both qualitatively and quantitatively. Muscle activity resulted in compression of the femur and small shear forces in the meta- and epi-physeal regions. Increasing the anteversion to an angle of 30 degrees increased hip contact forces and bending moments up to 28%.
Conclusions
This study has shown that femoral anteversion has a strong influence on the musculo-skeletal loading environment in the proximal femur.
Relevance
Detailed musculo-skeletal modelling may allow pre-surgical, patient specific optimisation of loading on implant, bone and soft tissues.
biomechanics, exercise physiology, femur physiology, gait, hip joint physiology, human, support, non-u.s. gov't
644-649
Heller, M.O.
3da19d2a-f34d-4ff1-8a34-9b5a7e695829
Bergmann, G.
0e5e06cd-2009-449f-a27c-4bcae0968a2f
Deuretzbacher, G.
787ca7f1-91ad-4aac-ba1c-5d6da7102364
Claes, L.
0d49608f-bb00-4db4-8ad1-458bf9f59550
Haas, N.P.
2eb6acab-3bde-4c16-8e57-6be990ad420f
Duda, G.N.
32d09622-34ad-49dd-8314-3f61c99a764e
October 2001
Heller, M.O.
3da19d2a-f34d-4ff1-8a34-9b5a7e695829
Bergmann, G.
0e5e06cd-2009-449f-a27c-4bcae0968a2f
Deuretzbacher, G.
787ca7f1-91ad-4aac-ba1c-5d6da7102364
Claes, L.
0d49608f-bb00-4db4-8ad1-458bf9f59550
Haas, N.P.
2eb6acab-3bde-4c16-8e57-6be990ad420f
Duda, G.N.
32d09622-34ad-49dd-8314-3f61c99a764e
Heller, M.O., Bergmann, G., Deuretzbacher, G., Claes, L., Haas, N.P. and Duda, G.N.
(2001)
Influence of femoral anteversion on proximal femoral loading: measurement and simulation in four patients.
Clinical Biomechanics, 16 (8), .
(PMID:11535345)
Abstract
Objective
The aim of this study was to determine the loading of the proximal femur during daily activities and to quantify the influence of femoral anteversion.
Design
This study combined experimental and analytical approaches to determine the in vivo loading at the hip joint. A numerical musculo-skeletal model was validated against measured in vivo hip contact forces and then used to analyse the influence of anteversion on the loading conditions in the femur.
Background
Musculo-skeletal loading of long bones is essential for joint replacement and fracture healing. Although joint contact forces have previously been measured in selected patients, the interaction between femoral anteversion and the associated musculo-skeletal loading environment remains unknown.
Methods
The gait of four patients with force measuring hip prostheses was analysed during walking and stair-climbing. Musculo-skeletal loading was determined using individual numerical models by minimising the sum of the muscle forces. RESULTS: Experimentally and numerically determined hip contact forces agreed both qualitatively and quantitatively. Muscle activity resulted in compression of the femur and small shear forces in the meta- and epi-physeal regions. Increasing the anteversion to an angle of 30 degrees increased hip contact forces and bending moments up to 28%.
Conclusions
This study has shown that femoral anteversion has a strong influence on the musculo-skeletal loading environment in the proximal femur.
Relevance
Detailed musculo-skeletal modelling may allow pre-surgical, patient specific optimisation of loading on implant, bone and soft tissues.
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More information
Published date: October 2001
Additional Information:
Journal Article
Keywords:
biomechanics, exercise physiology, femur physiology, gait, hip joint physiology, human, support, non-u.s. gov't
Organisations:
Bioengineering Group
Identifiers
Local EPrints ID: 348487
URI: http://eprints.soton.ac.uk/id/eprint/348487
ISSN: 0268-0033
PURE UUID: 650fb432-5bc2-4b08-b89c-b9e5358e6da5
Catalogue record
Date deposited: 26 Feb 2013 11:36
Last modified: 23 Jul 2022 02:05
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Contributors
Author:
G. Bergmann
Author:
G. Deuretzbacher
Author:
L. Claes
Author:
N.P. Haas
Author:
G.N. Duda
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