An evaluation of the posterior leaf spring orthosis using joint kinematics and kinetics

被引:60
作者
Ounpuu, S
Bell, KJ
Davis, RB
DeLuca, PA
机构
[1] Gait Analysis Laboratory, Department of Orthopaedics, Newington Children's Hospital, Newington, CT
[2] Gait Analysis Laboratory, Department of Orthopaedics, Newington Children's Hospital, Newington
关键词
cerebral palsy; gait; joint kinematics; joint kinetics; posterior leaf spring orthosis;
D O I
10.1097/01241398-199605000-00017
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
The primary function of the posterior leaf spring orthosis (PLS) is to prevent excessive equinus or drop foot in swing. The name of the orthosis, posterior leaf ''spring,'' suggests that it also mechanically augments push-off in stance. The purpose of this study was to determine the effect of the PLS on ankle function by using computerized gait-analysis techniques. Multiple barefoot versus brace walks were compared in 31 children with cerebral palsy. Results indicate that the PLS reduces excessive equinus in swing and is sufficiently flexible to allow ankle dorsiflexion in midstance. In terminal stance, the peak power-generating capabilities of the ankle were reduced when the child was wearing the PLS. Energy results indicate that more mechanical energy was absorbed during midstance and less produced during terminal stance with the PLS. Therefore, the PLS improved ankle function but did not augment ankle function through storage and return of mechanical, or spring, energy.
引用
收藏
页码:378 / 384
页数:7
相关论文
共 13 条
[1]  
BLECK UE, 1987, ORTHOPAEDIC MANAGEME, P179
[2]   EFFECTS OF ANKLE FOOT ORTHOSES ON THE GAIT OF CHILDREN [J].
BRODKE, DS ;
SKINNER, SR ;
LAMOREUX, LW ;
JOHANSON, ME ;
STHELEN, R ;
MORAN, SA ;
ASHLEY, RK .
JOURNAL OF PEDIATRIC ORTHOPAEDICS, 1989, 9 (06) :702-708
[3]   A GAIT ANALYSIS DATA-COLLECTION AND REDUCTION TECHNIQUE [J].
DAVIS, RB ;
OUNPUU, S ;
TYBURSKI, D ;
GAGE, JR .
HUMAN MOVEMENT SCIENCE, 1991, 10 (05) :575-587
[4]  
DELUCA PA, 1991, CLIN ORTHOP RELAT R, V264, P5
[5]   EFFECTS OF NEURODEVELOPMENTAL TREATMENT AND ORTHOSES ON KNEE FLEXION DURING GAIT - A SINGLE-SUBJECT DESIGN [J].
EMBREY, DG ;
YATES, L ;
MOTT, DH .
PHYSICAL THERAPY, 1990, 70 (10) :626-637
[6]  
GAGE JR, 1991, ADAPTABILITY HUMAN G, P359
[7]   ORTHOTIC DEVICES FOR AMBULATION IN CHILDREN WITH CEREBRAL-PALSY AND MYELOMENINGOCELE [J].
KNUTSON, LM ;
CLARK, DE .
PHYSICAL THERAPY, 1991, 71 (12) :947-960
[8]  
MIDDLETON EA, 1988, PROSTHET ORTHOT INT, V12, P129
[9]  
OUNPUU S, 1991, J PEDIATR ORTHOPED, V11, P341
[10]  
PERRY J, 1992, GAIT ANAL NORMAL PAT, P31