| Modeling of prosthetic limb rotation control by sensing rotation of residual arm bone. | |
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MedLine Citation:
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PMID: 18713682 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We proposed a new approach to improve the control of prosthetic arm rotation in amputees. Arm rotation is sensed by implanting a small permanent magnet into the distal end of the residual bone, which produces a magnetic field. The position of the bone rotation can be derived from magnetic field distribution detected with magnetic sensors on the arm surface, and then conveyed to the prosthesis controller to manipulate the rotation of the prosthesis. Proprioception remains intact for residual limb skeletal structures; thus, this control system should be natural and easy-to-use. In this study, simulations have been conducted in an upper arm model to assess the feasibility and performance of sensing the voluntary rotation of residual humerus with an implanted magnet. A sensitivity analysis of the magnet size and arm size was presented. The influence of relative position of the magnet to the magnetic sensors, orientation of the magnet relative to the limb axis, and displacement of the magnetic sensors on the magnetic field was evaluated. The performance of shielding external magnetostatic interference was also investigated. The simulation results suggest that the direction and angle of rotation of residual humerus could be obtained by decoding the magnetic field signals with magnetic sensors built into a prosthetic socket. This pilot study provides important guidelines for developing a practical interface between the residual bone rotation and the prosthesis for control of prosthetic rotation. |
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Authors:
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Guanglin Li; Todd A Kuiken |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 55 ISSN: 1558-2531 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-08-20 Completed Date: 2008-10-17 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: United States |
Other Details:
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Languages: eng Pagination: 2134-42 Citation Subset: IM |
Affiliation:
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Shandong University, Jinan 250100, China. guanglin-li@northwestern.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Amputation Stumps
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physiopathology* Amputees / rehabilitation* Arm / physiopathology* Computer Simulation Feedback Humans Models, Biological* Pilot Projects Rotation |
| Grant Support | |
ID/Acronym/Agency:
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R01 HD043137-01/HD/NICHD NIH HHS; R01 HD043137-01/HD/NICHD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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