Load on osseointegrated fixation of a transfemoral amputee during a fall: Loading, descent, impact and recovery analysis

Frossard, Laurent Alain, Tranberg, Roy, Haggstrom, Eva, Pearcy, Mark and Brånemark, Rickard (2010) Load on osseointegrated fixation of a transfemoral amputee during a fall: Loading, descent, impact and recovery analysis. Prosthetics and Orthotics International, 34 1: 85-97. doi:10.3109/03093640903585024


Author Frossard, Laurent Alain
Tranberg, Roy
Haggstrom, Eva
Pearcy, Mark
Brånemark, Rickard
Title Load on osseointegrated fixation of a transfemoral amputee during a fall: Loading, descent, impact and recovery analysis
Journal name Prosthetics and Orthotics International   Check publisher's open access policy
ISSN 0309-3646
1746-1553
Publication date 2010-03-01
Sub-type Article (original research)
DOI 10.3109/03093640903585024
Volume 34
Issue 1
Start page 85
End page 97
Total pages 13
Place of publication London, United Kingdom
Publisher Sage Publications
Collection year 2011
Language eng
Abstract Falling represents a health risk for lower limb amputees fitted with an osseointegrated fixation mainly because of the potential damage to the fixation. The purpose of this study was to characterize a real forward fall that occurred inadvertently to a transfemoral amputee fitted with an osseointegrated fixation while attending a gait measurement session to assess the load applied on the residuum. The objective was to analyze the load applied on the fixation with an emphasis on the sequence of events, the pattern and the magnitude of the forces and moments. The load was measured directly at 200Hz using a six-channel transducer. Complementary video footage was also studied. The fall was divided into four phases: Loading (240ms), descent (620ms), impact (365ms) and recovery (2495ms). The main impact forces and moments occurred 870ms and 915ms after the heel contact, and corresponded to 133 BW and 17 BWm, or 1.2 and 11.2 times the maximum forces and moments applied during the previous steps of the participant, respectively. This study provided key information to engineers and clinicians facing the challenge to design equipment, and rehabilitation and exercise programs to restore safely the locomotion of lower limb amputees. © 2010 ISPO.
Keyword Gait
Biomechanics
Lower limb amputation
Transfemoral amputation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Official 2011 Collection
 
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Created: Sun, 21 Mar 2010, 10:00:55 EST