Document Detail


Validity of method to quantify transtibial amputees' free-living prosthetic wearing times and physical activity levels when using suction suspension sockets.
MedLine Citation:
PMID:  22773201     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Prostheses are prescribed to restore the mobility of people with amputated lower limbs. Monitoring the prosthesis wearing times and physical activity of prosthesis users would provide invaluable information regarding rehabilitation progress and suitability of the prosthesis. The validation of a method to determine wearing times and physical activity state, as well as strides taken, of amputees wearing suction suspension sockets is reported. Eight participants with transtibial amputation were fitted with custom-made suction sockets. Analysis algorithms were used to automatically characterize physical activity based on the pressure at the socket's relief valve. The algorithms were validated in a laboratory-based protocol that included walking, stair climbing, standing, sitting, donning, and doffing. Intraclass correlation coefficient (2,1) values of >0.98 were achieved with mean differences of - 2.0%, 0.3%, 1.3%, and 0.7% for agreement between "off," "static," and "dynamic" times and stride count, respectively, as determined by the analysis algorithms and a concurrent video analysis. This study demonstrates that an interpretation of the pressure at the pressure-relief valve of suction suspension sockets can be used to determine wearing times and activity state.
Authors:
Kit Tzu Tang; William D Spence; Douglas Maxwell; Benedict William Stansfield
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of rehabilitation research and development     Volume:  49     ISSN:  1938-1352     ISO Abbreviation:  J Rehabil Res Dev     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-07-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8410047     Medline TA:  J Rehabil Res Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  427-38     Citation Subset:  IM    
Affiliation:
Bioengineering Unit, University of Strathclyde, Glasgow, United Kingdom.
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