The effect of prosthetic ankle mobility in the sagittal plane on the gait of transfemoral amputees wearing a stance phase controlled knee prosthesis

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

An experimental method was developed to determine the effects of prosthetic ankle mobility in the sagittal plane on the gaits of transfemoral amputees wearing a stance and swing (SNS) phase controlled knee prosthesis. Specially designed ankles with different ranges of motion in the sagittal plane were applied to rigid foot prostheses in order to exclude possible foot-ankle system interactions. The developed method was examined on even ground with five male transfemoral amputees wearing a SNS knee. The relative knee flexion-extension angles (defined as differences between maximum and minimum knee flexion angles) between initial contact and opposite initial contact were used to obtain changes in impact energy absorption in SNS knees in the early stance phase for two different ranges of ankle motion in the sagittal plane. Notable changes in relative knee flexion-extension angles were observed for the no-motion ankles, but no change in relative knee flexion-extension angles was observed for the maximum-motion ankles. Therefore, it is possible that sagittal mobility of a foot-ankle system is an important factor for inducing early flexion-extension movement of the knee in the stance phase of gait of transfemoral amputees wearing a SNS knee.

Original languageEnglish
Pages (from-to)263-271
Number of pages9
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume223
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

Fingerprint

Knee prostheses
Knee Prosthesis
Amputees
Prosthetics
Gait
Ankle
Knee
Energy absorption
Foot
Articular Range of Motion
Prostheses and Implants

Keywords

  • Gait characteristics in early stance phase
  • Sagittal mobility of foot-ankle
  • Stance and swing phase controlled knee prosthesis
  • Stance phase control
  • Transfemoral amputee

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{d300214e619b43439e76df6b6c6973a9,
title = "The effect of prosthetic ankle mobility in the sagittal plane on the gait of transfemoral amputees wearing a stance phase controlled knee prosthesis",
abstract = "An experimental method was developed to determine the effects of prosthetic ankle mobility in the sagittal plane on the gaits of transfemoral amputees wearing a stance and swing (SNS) phase controlled knee prosthesis. Specially designed ankles with different ranges of motion in the sagittal plane were applied to rigid foot prostheses in order to exclude possible foot-ankle system interactions. The developed method was examined on even ground with five male transfemoral amputees wearing a SNS knee. The relative knee flexion-extension angles (defined as differences between maximum and minimum knee flexion angles) between initial contact and opposite initial contact were used to obtain changes in impact energy absorption in SNS knees in the early stance phase for two different ranges of ankle motion in the sagittal plane. Notable changes in relative knee flexion-extension angles were observed for the no-motion ankles, but no change in relative knee flexion-extension angles was observed for the maximum-motion ankles. Therefore, it is possible that sagittal mobility of a foot-ankle system is an important factor for inducing early flexion-extension movement of the knee in the stance phase of gait of transfemoral amputees wearing a SNS knee.",
keywords = "Gait characteristics in early stance phase, Sagittal mobility of foot-ankle, Stance and swing phase controlled knee prosthesis, Stance phase control, Transfemoral amputee",
author = "Soon-Hyuck Lee and J. Hong",
year = "2009",
month = "2",
day = "1",
doi = "10.1243/09544119JEIM327",
language = "English",
volume = "223",
pages = "263--271",
journal = "Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine",
issn = "0954-4119",
publisher = "SAGE Publications Ltd",
number = "2",

}

TY - JOUR

T1 - The effect of prosthetic ankle mobility in the sagittal plane on the gait of transfemoral amputees wearing a stance phase controlled knee prosthesis

AU - Lee, Soon-Hyuck

AU - Hong, J.

PY - 2009/2/1

Y1 - 2009/2/1

N2 - An experimental method was developed to determine the effects of prosthetic ankle mobility in the sagittal plane on the gaits of transfemoral amputees wearing a stance and swing (SNS) phase controlled knee prosthesis. Specially designed ankles with different ranges of motion in the sagittal plane were applied to rigid foot prostheses in order to exclude possible foot-ankle system interactions. The developed method was examined on even ground with five male transfemoral amputees wearing a SNS knee. The relative knee flexion-extension angles (defined as differences between maximum and minimum knee flexion angles) between initial contact and opposite initial contact were used to obtain changes in impact energy absorption in SNS knees in the early stance phase for two different ranges of ankle motion in the sagittal plane. Notable changes in relative knee flexion-extension angles were observed for the no-motion ankles, but no change in relative knee flexion-extension angles was observed for the maximum-motion ankles. Therefore, it is possible that sagittal mobility of a foot-ankle system is an important factor for inducing early flexion-extension movement of the knee in the stance phase of gait of transfemoral amputees wearing a SNS knee.

AB - An experimental method was developed to determine the effects of prosthetic ankle mobility in the sagittal plane on the gaits of transfemoral amputees wearing a stance and swing (SNS) phase controlled knee prosthesis. Specially designed ankles with different ranges of motion in the sagittal plane were applied to rigid foot prostheses in order to exclude possible foot-ankle system interactions. The developed method was examined on even ground with five male transfemoral amputees wearing a SNS knee. The relative knee flexion-extension angles (defined as differences between maximum and minimum knee flexion angles) between initial contact and opposite initial contact were used to obtain changes in impact energy absorption in SNS knees in the early stance phase for two different ranges of ankle motion in the sagittal plane. Notable changes in relative knee flexion-extension angles were observed for the no-motion ankles, but no change in relative knee flexion-extension angles was observed for the maximum-motion ankles. Therefore, it is possible that sagittal mobility of a foot-ankle system is an important factor for inducing early flexion-extension movement of the knee in the stance phase of gait of transfemoral amputees wearing a SNS knee.

KW - Gait characteristics in early stance phase

KW - Sagittal mobility of foot-ankle

KW - Stance and swing phase controlled knee prosthesis

KW - Stance phase control

KW - Transfemoral amputee

UR - http://www.scopus.com/inward/record.url?scp=63849230517&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=63849230517&partnerID=8YFLogxK

U2 - 10.1243/09544119JEIM327

DO - 10.1243/09544119JEIM327

M3 - Article

C2 - 19278201

AN - SCOPUS:63849230517

VL - 223

SP - 263

EP - 271

JO - Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

JF - Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

SN - 0954-4119

IS - 2

ER -