NDLI: Kinetics of stiff-legged gait: induced acceleration analysis

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Kinetics of stiff-legged gait: induced acceleration analysis

Content Provider	IEEE Xplore Digital Library
Author	Riley, P.O. Kerrigan, D.C.
Copyright Year	1993
Abstract	Treating spastic paretic stiff-legged gait, defined as reduced knee flexion in swing, holds a high priority in the rehabilitation of patients with upper motor neuron lesions. We propose a method to determine the relative contributions of hip, knee, and ankle inpairments to this disability. We analyzed the gait of ten patients with stiff-legged gait (SLG) due to a single stroke and ten healthy, able-bodied controls. Using subject specific models, we analyzed the induced accelerations (IAs) at the knee. Knee IAs throughout the gait cycle were calculated and the sum of the IAs was compared to the knee joint angular acceleration estimated from kinematic data. The preswing and early swing IAs were the focus of our examination as these largely determine knee kinematics in swing. Knee angular accelerations estimated from IAs and kinematic data agreed for both controls and patients. Gait cycle IA analysis of individual patients identified highly variable causes of SLG including ankle and hip joint impairments. Induced acceleration analysis (IAA) suggested that multiple impairments, not just about the knee, but also about the hip and ankle, lead to this disability. Individual subjects are likely to have individual reasons for their stiff-legged gait. Defining the link between the patients specific impairments and their gait disability should be a goal of clinical gait analysis. IAA is a useful tool for this purpose with a strong potential for clinical application.
Sponsorship	IEEE Computer Society
Starting Page	420
Ending Page	426
Page Count	7
File Size	116739
File Format	PDF
ISSN	10636528
Volume Number	7
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-12-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kinetic theory Acceleration Knee Hip Kinematics Muscles Neurons Lesions Medical treatment Birth disorders
Content Type	Text
Resource Type	Article
Subject	Engineering

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