Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs
OBJECTIVE: This study aimed to compare the effects of different suspension methods on the interface stress inside the prosthetic sockets of transtibial amputees when negotiating ramps and stairs. DESIGN: Three transtibial prostheses, with a pin/lock system, a Seal-In system, and a magnetic suspensio...
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Online Access: | http://eprints.um.edu.my/13856/1/Interface_stress_in_socket_residual_limb_with_transtibial_prosthetic.pdf http://eprints.um.edu.my/13856/ http://www.ncbi.nlm.nih.gov/pubmed/24919079 |
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my.um.eprints.138562018-10-25T08:42:40Z http://eprints.um.edu.my/13856/ Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs Eshraghi, A. Abu Osman, Noor Azuan Gholizadeh, H. Ali, S. Wan Abas, Wan Abu Bakar T Technology (General) TA Engineering (General). Civil engineering (General) OBJECTIVE: This study aimed to compare the effects of different suspension methods on the interface stress inside the prosthetic sockets of transtibial amputees when negotiating ramps and stairs. DESIGN: Three transtibial prostheses, with a pin/lock system, a Seal-In system, and a magnetic suspension system, were created for the participants in a prospective study. Interface stress was measured as the peak pressure by using the F-socket transducers during stairs and ramp negotiation. RESULTS: Twelve individuals with transtibial amputation managed to complete the experiments. During the stair ascent and descent, the greatest peak pressure was observed in the prosthesis with the Seal-In system. The magnetic prosthetic suspension system caused significantly different peak pressure at the anterior proximal region compared with the pin/lock (P = 0.022) and Seal-In (P = 0.001) during the stair ascent. It was also observed during the stair descent and ramp negotiation. CONCLUSIONS: The prostheses exhibited varying pressure profiles during the stair and ramp ascent. The prostheses with the pin/lock and magnetic suspension systems exhibited lower peak pressures compared with the Seal-In system. The intrasystem pressure distribution at the anterior and posterior regions of the residual limb was fairly homogenous during the stair and ramp ascent and descent. Nevertheless, the intrasystem pressure mapping revealed a significant difference among the suspension types, particularly at the anterior and posterior sensor sites. 2015-01 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13856/1/Interface_stress_in_socket_residual_limb_with_transtibial_prosthetic.pdf Eshraghi, A. and Abu Osman, Noor Azuan and Gholizadeh, H. and Ali, S. and Wan Abas, Wan Abu Bakar (2015) Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs. American Journal of Physical Medicine & Rehabilitation, 94 (1). pp. 1-10. ISSN 0894-9115 http://www.ncbi.nlm.nih.gov/pubmed/24919079 10.1097/PHM.0000000000000134 |
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T Technology (General) TA Engineering (General). Civil engineering (General) Eshraghi, A. Abu Osman, Noor Azuan Gholizadeh, H. Ali, S. Wan Abas, Wan Abu Bakar Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
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OBJECTIVE: This study aimed to compare the effects of different suspension methods on the interface stress inside the prosthetic sockets of transtibial amputees when negotiating ramps and stairs. DESIGN: Three transtibial prostheses, with a pin/lock system, a Seal-In system, and a magnetic suspension system, were created for the participants in a prospective study. Interface stress was measured as the peak pressure by using the F-socket transducers during stairs and ramp negotiation. RESULTS: Twelve individuals with transtibial amputation managed to complete the experiments. During the stair ascent and descent, the greatest peak pressure was observed in the prosthesis with the Seal-In system. The magnetic prosthetic suspension system caused significantly different peak pressure at the anterior proximal region compared with the pin/lock (P = 0.022) and Seal-In (P = 0.001) during the stair ascent. It was also observed during the stair descent and ramp negotiation. CONCLUSIONS: The prostheses exhibited varying pressure profiles during the stair and ramp ascent. The prostheses with the pin/lock and magnetic suspension systems exhibited lower peak pressures compared with the Seal-In system. The intrasystem pressure distribution at the anterior and posterior regions of the residual limb was fairly homogenous during the stair and ramp ascent and descent. Nevertheless, the intrasystem pressure mapping revealed a significant difference among the suspension types, particularly at the anterior and posterior sensor sites. |
format |
Article |
author |
Eshraghi, A. Abu Osman, Noor Azuan Gholizadeh, H. Ali, S. Wan Abas, Wan Abu Bakar |
author_facet |
Eshraghi, A. Abu Osman, Noor Azuan Gholizadeh, H. Ali, S. Wan Abas, Wan Abu Bakar |
author_sort |
Eshraghi, A. |
title |
Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
title_short |
Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
title_full |
Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
title_fullStr |
Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
title_full_unstemmed |
Interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
title_sort |
interface stress in socket/residual limb with transtibial prosthetic suspension systems during locomotion on slopes and stairs |
publishDate |
2015 |
url |
http://eprints.um.edu.my/13856/1/Interface_stress_in_socket_residual_limb_with_transtibial_prosthetic.pdf http://eprints.um.edu.my/13856/ http://www.ncbi.nlm.nih.gov/pubmed/24919079 |
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