Document Detail

Effects of alignment on interface pressure for transtibial amputee during walking.
MedLine Citation:
PMID:  19127605     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To assess the mechanical behaviour at interface for unilateral transtibial amputees during walking when the prosthesis is misaligned, since studies examining interface pressure between residual limb and prosthetic socket have been restricted to unsupported stance and natural gait. METHOD: One male subject with transtibial amputation volunteers for the study. Interface pressures over five sites are measured under three sagittal alignment settings. MP (mean peak interface pressure), TP(90+) (time in which pressure exceeded 90% of peak pressure) and TPI(90+) (time-pressure integral at the period of sustained sub-maximal load) are discussed for each alignment setting. RESULTS: Compared with optimal alignment, the trend of interface pressure, the mean peak pressure do not change much,but the duration of sub-maximal pressure changes remarkably, except that at the patellar tendon, and finally the TPI(90+) changes considerably with different alignment settings. CONCLUSIONS: The results offer the clinician and paramedical staff further insight in residual limb/socket interface mechanics in the transtibial amputation patients and provide potentially useful information for socket design and prosthesis fitting.
Xiaohong Jia; Shuangfu Suo; Fan Meng; Rencheng Wang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Disability and rehabilitation. Assistive technology     Volume:  3     ISSN:  1748-3115     ISO Abbreviation:  Disabil Rehabil Assist Technol     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2009-01-06     Completed Date:  2009-04-03     Revised Date:  2009-11-17    
Medline Journal Info:
Nlm Unique ID:  101255937     Medline TA:  Disabil Rehabil Assist Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  339-43     Citation Subset:  IM    
Division of Intelligent and Biomechanical System, State Key Laboratory of Tribology, Tsinghua University Beijing, China.
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MeSH Terms
Amputees / rehabilitation*
Artificial Limbs*
Biomechanics* / physiology
Human Engineering / instrumentation,  methods
Prosthesis Fitting
Walking* / physiology

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

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