Cargando…
How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation?
Increased ankle power on the prosthetic side seems to decrease biomechanical loading parameters on the sound side. This assumption is based on biomechanical comparisons of different foot constructions. However, such study designs could not show whether the amount of ankle power solely influences the...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Wolters Kluwer
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9376874/ https://www.ncbi.nlm.nih.gov/pubmed/35315835 http://dx.doi.org/10.1097/PXR.0000000000000099 |
_version_ | 1784768225874018304 |
---|---|
author | Pröbsting, Eva Altenburg, Björn Bellmann, Malte Krug, Kerstin Schmalz, Thomas |
author_facet | Pröbsting, Eva Altenburg, Björn Bellmann, Malte Krug, Kerstin Schmalz, Thomas |
author_sort | Pröbsting, Eva |
collection | PubMed |
description | Increased ankle power on the prosthetic side seems to decrease biomechanical loading parameters on the sound side. This assumption is based on biomechanical comparisons of different foot constructions. However, such study designs could not show whether the amount of ankle power solely influences the sound side. OBJECTIVE: To analyze the influence of divergent ankle power, resulting from different foot constructions and from different ankle power settings, on the sound side loading parameters. STUDY DESIGN: Interventional cross sectional study. METHODS: Level walking of transfemoral amputees with a microprocessor knee joint and Solid Ankle Cushioned Heel (SACH), energy storing and returning (ESR) and powered foot (PF) was analyzed. The PF was adapted in three configurations: without power (np), low power (lp), and optimal power (op). An optoelectronic camera system with 12 cameras and two force plates were used. RESULTS: The ankle power on the prosthetic side shows significant differences about foot types and different settings of the PF. The knee adduction moment, the knee flexion moment, and the vertical ground reaction forces on the sound side were significantly reduced with PF_op and ESR in comparison to SACH. When analyzing these parameters for the different PF configurations, only some show significant results at normal velocity. CONCLUSIONS: The additional positive mechanical work for an active push off in the PF tends to have a relieving effect. The biomechanical sound side loading parameters are reduced with PF_op in comparison to SACH and ESR, resulting in a relief of the sound side of lower limb amputees. |
format | Online Article Text |
id | pubmed-9376874 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Wolters Kluwer |
record_format | MEDLINE/PubMed |
spelling | pubmed-93768742022-08-19 How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? Pröbsting, Eva Altenburg, Björn Bellmann, Malte Krug, Kerstin Schmalz, Thomas Prosthet Orthot Int Original Research Report Increased ankle power on the prosthetic side seems to decrease biomechanical loading parameters on the sound side. This assumption is based on biomechanical comparisons of different foot constructions. However, such study designs could not show whether the amount of ankle power solely influences the sound side. OBJECTIVE: To analyze the influence of divergent ankle power, resulting from different foot constructions and from different ankle power settings, on the sound side loading parameters. STUDY DESIGN: Interventional cross sectional study. METHODS: Level walking of transfemoral amputees with a microprocessor knee joint and Solid Ankle Cushioned Heel (SACH), energy storing and returning (ESR) and powered foot (PF) was analyzed. The PF was adapted in three configurations: without power (np), low power (lp), and optimal power (op). An optoelectronic camera system with 12 cameras and two force plates were used. RESULTS: The ankle power on the prosthetic side shows significant differences about foot types and different settings of the PF. The knee adduction moment, the knee flexion moment, and the vertical ground reaction forces on the sound side were significantly reduced with PF_op and ESR in comparison to SACH. When analyzing these parameters for the different PF configurations, only some show significant results at normal velocity. CONCLUSIONS: The additional positive mechanical work for an active push off in the PF tends to have a relieving effect. The biomechanical sound side loading parameters are reduced with PF_op in comparison to SACH and ESR, resulting in a relief of the sound side of lower limb amputees. Wolters Kluwer 2022-08 2022-03-22 /pmc/articles/PMC9376874/ /pubmed/35315835 http://dx.doi.org/10.1097/PXR.0000000000000099 Text en Copyright © 2022 The Authors. Published by Wolters Kluwer incorporated on behalf of The International Society for Prosthetics and Orthotics https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) , where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. |
spellingShingle | Original Research Report Pröbsting, Eva Altenburg, Björn Bellmann, Malte Krug, Kerstin Schmalz, Thomas How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title | How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title_full | How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title_fullStr | How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title_full_unstemmed | How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title_short | How does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
title_sort | how does ankle power on the prosthetic side influence loading parameters on the sound side during level walking of persons with transfemoral amputation? |
topic | Original Research Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9376874/ https://www.ncbi.nlm.nih.gov/pubmed/35315835 http://dx.doi.org/10.1097/PXR.0000000000000099 |
work_keys_str_mv | AT probstingeva howdoesanklepowerontheprostheticsideinfluenceloadingparametersonthesoundsideduringlevelwalkingofpersonswithtransfemoralamputation AT altenburgbjorn howdoesanklepowerontheprostheticsideinfluenceloadingparametersonthesoundsideduringlevelwalkingofpersonswithtransfemoralamputation AT bellmannmalte howdoesanklepowerontheprostheticsideinfluenceloadingparametersonthesoundsideduringlevelwalkingofpersonswithtransfemoralamputation AT krugkerstin howdoesanklepowerontheprostheticsideinfluenceloadingparametersonthesoundsideduringlevelwalkingofpersonswithtransfemoralamputation AT schmalzthomas howdoesanklepowerontheprostheticsideinfluenceloadingparametersonthesoundsideduringlevelwalkingofpersonswithtransfemoralamputation |