The Effect of Knee Flexion Contracture Following Total Knee Arthroplasty on the Energy Cost of Walking

Abstract This study evaluated the energy cost of walking (Cw ) with knee flexion contractures (FC) simulated with a knee brace, in total knee arthroplasty (TKA) recipients (n = 16) and normal controls (n = 15), and compared it to baseline (no brace). There was no significant difference in Cw between...

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Bibliographic Details
Published in:The Journal of arthroplasty 2014, Vol.29 (1), p.85-89
Main Authors: Murphy, Michael T., BPhty, BHMS, Skinner, Tina L., PhD, BAppSci (HMS-Ex Sci) (Hons), GCHigherEd, Cresswell, Andrew G., BEd, MSc, Med Dr (Neuroscience), Crawford, Ross W., D.Phil (Oxon), MBBS, FRACS (Orth), Journeaux, Simon F., BSc, MBBS, FRCS, FRACS (Orth), Russell, Trevor G., PhD, BPhty
Format: Article
Language:English
Subjects:
Aged
Arthroplasty, Replacement, Knee - adverse effects
Biomechanical Phenomena
Contracture - etiology
Contracture - physiopathology
energy cost
Energy Metabolism
Female
flexion contracture
gait
Gait - physiology
Humans
Joint Diseases - physiopathology
Joint Diseases - surgery
Knee Joint - physiopathology
Knee Joint - surgery
Male
Middle Aged
Models, Biological
Orthopedics
Oxygen Consumption
Physical Exertion - physiology
Range of Motion, Articular
total knee arthroplasty
Walking - physiology
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Summary:Abstract This study evaluated the energy cost of walking (Cw ) with knee flexion contractures (FC) simulated with a knee brace, in total knee arthroplasty (TKA) recipients (n = 16) and normal controls (n = 15), and compared it to baseline (no brace). There was no significant difference in Cw between the groups at baseline but TKA recipients walked slower ( P = 0.048) and with greater knee flexion in this condition ( P = 0.003). Simulated FC significantly increased Cw in both groups (TKA P = 0.020, control P = 0.002) and this occurred when FC exceeded 20° in the TKA group and 15° in the controls. Reported perceived exertion was only significantly increased by FC in the control group (control P < 0.001, TKA P = 0.058). Simulated knee FCs less than 20° do not increase Cw or perceived exertion in TKA recipients.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2013.04.039