The relationship of lower extremity strength and gait parameters in patients with post-polio syndrome

Perry, J ;Mulroy, S ;Renwick, S Archives of Physical Medicine and Rehabilitation.1993 Feb; 74(2): 165-9

ABSTRACT: Relationships between lower extremity strength and stride characteristics were studied in 24 patients with post-polio syndrome. Maximum isometric torques were measured in the ankle plantar flexors, hip and knee extensors, and hip abductors. Gait velocity, stride length, and cadence were recorded during free and fast walking. Step-wise regression analysis was performed to determine which muscle groups best predicted ambulatory function. Plantar flexion torque was the best predictor of velocity (r = .55 free walking and r = .76 fast) and cadence (r = .46 free and r = .58 fast). The combination of plantar flexion and hip abduction torques was the best predictor of fast stride length (r = .78). These findings emphasize the important role of the plantar flexor muscles in gait. Knee extension torque was the poorest predictor for each of the gait parameters. Several patients demonstrated gait deviations that minimized the penalty of quadriceps weakness. Without a contracture or an orthosis, however, no adequate substitution exists for weak plantar flexion.

SOTO | USA > SOT Literature > Post Polio Syndrome > The relationship of lower extremity strength and gait parameters in patients with post-polio syndrome

Related Web Resources

Editor Recommends

This SOT Literature Page and all its contents herein are published by SOTO-USA solely for the purpose of education. All rights reserved by SOTO-USA to accept, reject or modify any submission for publication. The opinions stated in the electronically printed material herein are those of the authors and do not necessarily represent the opinions of SOTO-USA or other individuals associated with SOTO-USA. SOTO-USA does not guarantee or make any representation that the printed material contained herein is valid, reliable or accurate. SOTO-USA does not assume any responsibility for injury arising from any use or misuse of the printed material herein. The printed material contained herein is assumed to be from reliable sources and there is no implication that the printed material herein present the only, or the best methodologies or procedures for the care or treatment of conditions discussed. It is incumbent upon the reader to verify the accuracy of any diagnosis and treatment information contained herein, and to make modifications as new information and/or research arises.