Ankle, knee, and hip moments during standing with and without joint contractures: Simulation study for functional electrical stimulation

Hitoshi Kagaya, Mukut Sharma, Rudi Kobetic, E. Byron Marsolais

研究成果: Article

15 引用 (Scopus)

抄録

Joint contractures have been one of the contraindications for use of functional electrical stimulation for standing in paraplegic patients. A simulation study using a three-segment link mechanical model of the human body was performed to calculate the muscle moments at the ankles, knees, and hips during standing with and without having joint contractures. The knee and hip angles were varied in 5°increments, whereas the ankle angles were varied in 1°increments. It was assumed that energy efficient posture was obtained with the least sum of the squared moments of the ankles, knees, and hips joints by the muscles. Ankles at 5°of dorsiflexion, knees at 0°, and hips at 15°of extension resulted in the most energy efficient posture without joint contractures. The muscle moments increased with the increase in angle of contractures. The joint contractures at ankle angles ≤6°of plantar flexion, knee angles ≤20°of flexion, and/or hip angles ≤20°of flexion produce a potentially unstable posture. These findings suggest that some degree of joint contractures can be tolerated in paraplegic patients using functional electrical stimulation for standing.

元の言語English
ページ(範囲)49-54
ページ数6
ジャーナルAmerican Journal of Physical Medicine and Rehabilitation
77
発行部数1
DOI
出版物ステータスPublished - 01-01-1998

Fingerprint

Contracture
Ankle
Electric Stimulation
Hip
Knee
Joints
Posture
Muscles
Ankle Joint
Hip Joint
Knee Joint
Human Body

All Science Journal Classification (ASJC) codes

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

これを引用

@article{eb0aeffc71af46598868f0f6493e31e6,
title = "Ankle, knee, and hip moments during standing with and without joint contractures: Simulation study for functional electrical stimulation",
abstract = "Joint contractures have been one of the contraindications for use of functional electrical stimulation for standing in paraplegic patients. A simulation study using a three-segment link mechanical model of the human body was performed to calculate the muscle moments at the ankles, knees, and hips during standing with and without having joint contractures. The knee and hip angles were varied in 5°increments, whereas the ankle angles were varied in 1°increments. It was assumed that energy efficient posture was obtained with the least sum of the squared moments of the ankles, knees, and hips joints by the muscles. Ankles at 5°of dorsiflexion, knees at 0°, and hips at 15°of extension resulted in the most energy efficient posture without joint contractures. The muscle moments increased with the increase in angle of contractures. The joint contractures at ankle angles ≤6°of plantar flexion, knee angles ≤20°of flexion, and/or hip angles ≤20°of flexion produce a potentially unstable posture. These findings suggest that some degree of joint contractures can be tolerated in paraplegic patients using functional electrical stimulation for standing.",
author = "Hitoshi Kagaya and Mukut Sharma and Rudi Kobetic and Marsolais, {E. Byron}",
year = "1998",
month = "1",
day = "1",
doi = "10.1097/00002060-199801000-00009",
language = "English",
volume = "77",
pages = "49--54",
journal = "American Journal of Physical Medicine and Rehabilitation",
issn = "0894-9115",
publisher = "Lippincott Williams and Wilkins",
number = "1",

}

TY - JOUR

T1 - Ankle, knee, and hip moments during standing with and without joint contractures

T2 - Simulation study for functional electrical stimulation

AU - Kagaya, Hitoshi

AU - Sharma, Mukut

AU - Kobetic, Rudi

AU - Marsolais, E. Byron

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Joint contractures have been one of the contraindications for use of functional electrical stimulation for standing in paraplegic patients. A simulation study using a three-segment link mechanical model of the human body was performed to calculate the muscle moments at the ankles, knees, and hips during standing with and without having joint contractures. The knee and hip angles were varied in 5°increments, whereas the ankle angles were varied in 1°increments. It was assumed that energy efficient posture was obtained with the least sum of the squared moments of the ankles, knees, and hips joints by the muscles. Ankles at 5°of dorsiflexion, knees at 0°, and hips at 15°of extension resulted in the most energy efficient posture without joint contractures. The muscle moments increased with the increase in angle of contractures. The joint contractures at ankle angles ≤6°of plantar flexion, knee angles ≤20°of flexion, and/or hip angles ≤20°of flexion produce a potentially unstable posture. These findings suggest that some degree of joint contractures can be tolerated in paraplegic patients using functional electrical stimulation for standing.

AB - Joint contractures have been one of the contraindications for use of functional electrical stimulation for standing in paraplegic patients. A simulation study using a three-segment link mechanical model of the human body was performed to calculate the muscle moments at the ankles, knees, and hips during standing with and without having joint contractures. The knee and hip angles were varied in 5°increments, whereas the ankle angles were varied in 1°increments. It was assumed that energy efficient posture was obtained with the least sum of the squared moments of the ankles, knees, and hips joints by the muscles. Ankles at 5°of dorsiflexion, knees at 0°, and hips at 15°of extension resulted in the most energy efficient posture without joint contractures. The muscle moments increased with the increase in angle of contractures. The joint contractures at ankle angles ≤6°of plantar flexion, knee angles ≤20°of flexion, and/or hip angles ≤20°of flexion produce a potentially unstable posture. These findings suggest that some degree of joint contractures can be tolerated in paraplegic patients using functional electrical stimulation for standing.

UR - http://www.scopus.com/inward/record.url?scp=0031914392&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031914392&partnerID=8YFLogxK

U2 - 10.1097/00002060-199801000-00009

DO - 10.1097/00002060-199801000-00009

M3 - Article

C2 - 9482379

AN - SCOPUS:0031914392

VL - 77

SP - 49

EP - 54

JO - American Journal of Physical Medicine and Rehabilitation

JF - American Journal of Physical Medicine and Rehabilitation

SN - 0894-9115

IS - 1

ER -