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A controlled clinical trial of a clinically-tuned powered ankle prosthesis in people with transtibial amputation.
- Source :
-
Clinical Rehabilitation . Mar2018, Vol. 32 Issue 3, p319-329. 11p. 2 Diagrams, 3 Charts, 3 Graphs. - Publication Year :
- 2018
-
Abstract
- Objective: To determine whether there are changes in level walking performance for people using a powered ankle prosthesis that was tuned by an independent, manufacturer-certified prosthetist in accordance with device recommendations. Design: Intervention study with cross-over design. Setting: Laboratory. Participants: Convenience sample of 10 individuals with unilateral, transtibial amputation, and 10 ageand gender-matched control participants. Interventions: Powered ankle prosthesis (BiOM T2 Ankle System). Main outcome metrics: Metabolic costs of walking, preferred walking speed. Results: There were no significant differences in oxygen consumption (2.9% difference; P = 0.606, d = 0.26), cost of transport (~1% difference; P = 0.652, d = 0.23), or preferred walking speed (~1% difference; P = 0.147, d = 0.76) when using the powered ankle compared to unpowered prostheses. Secondary analyses of user characteristics revealed that participants who were classified as having the highest function (K4 on Medicare's 5-point scale from K0 to K4) were significantly more likely to exhibit energy cost savings than those classified as having lower function (K3; P = 0.014, d = 2.36). Conclusions: Participants did not demonstrate significant improvements in energetics or preferred speed when wearing a clinically tuned powered ankle prosthesis compared to their non-powered prostheses. Prescribers of powered devices should understand that not all users will show an immediate reduction in energy expenditure. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AMPUTATION
*ANKLE
*CLINICAL trials
*CONFIDENCE intervals
*STATISTICAL correlation
*CROSSOVER trials
*DIAGNOSIS
*ENERGY metabolism
*EXPERIMENTAL design
*GAIT in humans
*HEALTH surveys
*MYOELECTRIC prosthesis
*PROBABILITY theory
*QUESTIONNAIRES
*RESEARCH funding
*STATISTICAL sampling
*STATISTICS
*T-test (Statistics)
*DATA analysis
*OXYGEN consumption
*DESCRIPTIVE statistics
Subjects
Details
- Language :
- English
- ISSN :
- 02692155
- Volume :
- 32
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Clinical Rehabilitation
- Publication Type :
- Academic Journal
- Accession number :
- 128153168
- Full Text :
- https://doi.org/10.1177/0269215517723054