Comparison of the Easy Strutter Functional Orthosis System and axillary crutches during modified 3-point gait.
The Easy Strutter Functional Orthosis System (ESFOS) was designed to improve assistive device ambulatory efficiency. This crossover design study compared the ESFOS to axillary crutches during modified 3-point gait. Thirty-eight subjects (40-65 years of age) at > 1 year after unilateral total knee or hip replacement participated in this study. Heart rate, mean peak palmar and plantar force magnitude, and onset timing were monitored during self-directed pace ambulation. Between trials, subjects responded to questions on perceived exertion, stability/security, and comfort. One-way analyses of variance were used to evaluate condition differences for ratio or interval data (p < or = 0.01). Statistically significant differences were noted for mean peak palmar forces (reduced 45% and delayed 31%), mean peak plantar force onsets (delayed 30%), and energy expenditure index (EEI) (reduced 25%). Wilcoxon signed rank tests were used to evaluate condition differences for ordinal data. Subjects preferred the ESFOS to axillary crutches for comfort and security/stability on flat surfaces and stairs (p < or = 0.001). Results suggest greater ambulatory gait efficiency during ESFOS use. Further study is indicated with other patient populations.
Nyland
John
J
Division of Sports Medicine, Department of Orthopaedic Surgery, University of Louisville, 210 East Gray Street, Suite 1003, Louisville, KY 40202, USA. john.nyland@louisville.edu
Bernasek
Thomas
T
Markee
Blaine
B
Dundore
Christine
C
D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000534:rehabilitation*; D019645:Arthroplasty, Replacement, Knee / Q000534:rehabilitation*; D018592:Cross-Over Studies; D003446:Crutches; D004867:Equipment Design; D005260:Female; D005684:Gait; D006801:Humans; D008297:Male; D008875:Middle Aged; D009989:Orthotic Devices