TY - JOUR
T1 - An electrical knee lock system for functional electrical stimulation
AU - Kagaya, Hitoshi
AU - Shimada, Yoichi
AU - Sato, Kozo
AU - Sato, Mineyoshi
AU - Iizuka, Kiyomi
AU - Obinata, Goro
N1 - Funding Information:
From the Department of Orthopedic Surgery, Akita University School of Medicine (Drs. Kagaya, Shimada, K. Sato, M. Sato), Biotec Ltd. (Mr. Iizuka), and the Department of Mechanical Engineering, Akita University Mining College (Dr. Obinata), Akita, Japan. Submitted for publication December 7, 1995. Accepted in revised form Febr,,i-ary 14, 1996. Supported in part by the Health Science Research Grants by the Ministry of Health and Welfare of Japan. No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the authors or upon any organization with which the authors are associated. Reprint requests to Hitoshi Kagaya, MD, Department of Orthopedic Surgery, Akita University School of Medicine, 1-1-1 Hondo, Akita 010, Japan. © 1996 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation 0003-9993/96/7709-379353.00/0
PY - 1996/9
Y1 - 1996/9
N2 - An electrical knee lock system that can be combined with functional electrical stimulation was designed for paraplegic patients. This knee system unlocks the knee electrically and allows knee flexion during the swing phase of the gait. When the knee is extended by electrical stimulation of the knee extensors, the knee is automatically locked by the weight of the locking bar, and the stimulation of the knee extensors is stopped. Since the knee extensors are stimulated for only a short period, muscle fatigue of the knee extensors seldom occurs. We applied this system to a T8 completely paraplegic patient. Standing-up, standing, walking, and sitting-down motions were all restored by our hybrid system. No electrical stimulation was necessary during standing, and the knee extensors were stimulated during only a small percentage of the 1-gait cycle.
AB - An electrical knee lock system that can be combined with functional electrical stimulation was designed for paraplegic patients. This knee system unlocks the knee electrically and allows knee flexion during the swing phase of the gait. When the knee is extended by electrical stimulation of the knee extensors, the knee is automatically locked by the weight of the locking bar, and the stimulation of the knee extensors is stopped. Since the knee extensors are stimulated for only a short period, muscle fatigue of the knee extensors seldom occurs. We applied this system to a T8 completely paraplegic patient. Standing-up, standing, walking, and sitting-down motions were all restored by our hybrid system. No electrical stimulation was necessary during standing, and the knee extensors were stimulated during only a small percentage of the 1-gait cycle.
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U2 - 10.1016/S0003-9993(96)90272-5
DO - 10.1016/S0003-9993(96)90272-5
M3 - Article
C2 - 8822676
AN - SCOPUS:0029835512
SN - 0003-9993
VL - 77
SP - 870
EP - 873
JO - Archives of Physical Medicine and Rehabilitation
JF - Archives of Physical Medicine and Rehabilitation
IS - 9
ER -