Document Detail


Apparatus for monitoring load bearing rehabilitation exercises of a transfemoral amputee fitted with an osseointegrated fixation: a proof-of-concept study.
MedLine Citation:
PMID:  19926285     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this proof-of-concept study was to determine the relevance of direct measurements to monitor the load applied on the osseointegrated fixation of transfemoral amputees during static load bearing exercises. The objectives were (A) to introduce an apparatus using a three-dimensional load transducer, (B) to present a range of derived information relevant to clinicians, (C) to report on the outcomes of a pilot study and (D) to compare the measurements from the transducer with those from the current method using a weighing scale. One transfemoral amputee fitted with an osseointegrated implant was asked to apply 10 kg, 20 kg, 40 kg and 80 kg on the fixation, using self-monitoring with the weighing scale. The loading was directly measured with a portable kinetic system including a six-channel transducer, external interface circuitry and a laptop. As the load prescribed increased from 10 kg to 80 kg, the forces and moments applied on and around the antero-posterior axis increased by four-fold anteriorly and 14-fold medially, respectively. The forces and moments applied on and around the medio-lateral axis increased by nine-fold laterally and 16-fold from anterior to posterior, respectively. The long axis of the fixation was overloaded and underloaded in 17% and 83% of the trials, respectively, by up to + or - 10%. This proof-of-concept study presents an apparatus that can be used by clinicians facing the challenge of improving basic knowledge on osseointegration, for the design of equipment for load bearing exercises and for rehabilitation programs.
Authors:
Laurent Frossard; David Lee Gow; Kerstin Hagberg; Nicola Cairns; Bill Contoyannis; Steven Gray; Richard Br?nemark; Mark Pearcy
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-18
Journal Detail:
Title:  Gait & posture     Volume:  31     ISSN:  1879-2219     ISO Abbreviation:  Gait Posture     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-03     Completed Date:  2010-05-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  England    
Other Details:
Languages:  eng     Pagination:  223-8     Citation Subset:  IM    
Copyright Information:
Copyright 2009 Elsevier B.V. All rights reserved.
Affiliation:
School of Engineering Systems, Queensland University of Technology, Brisbane, Australia. LaurentFrossard@yahoo.com.au
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MeSH Terms
Descriptor/Qualifier:
Amputation / rehabilitation
Amputees / rehabilitation*
Biomechanics
Equipment Design
Exercise Therapy / methods*
Humans
Male
Microcomputers
Middle Aged
Monitoring, Physiologic / instrumentation*
Software
Transducers
Weight-Bearing*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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