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Evaluation of function, performance and preference as transfemoral amputees transition from mechanical to microprocessor control of the prosthetic knee
HAFNER BJ; WILLINGHAM LL; BUELL NC; ALLYN KJ; SMITH DG
ARCH PHYS MED REHABIL , 2007, vol. 88, n° 2, p. 207-217 Doc n°: 128436 Localisation : Documentation IRR D.O.I. : http://dx.doi.org/doi:10.1016/j.apmr.2006.10.030 Descripteurs : EB31 - AMPUTATION TRANSFEMORALE, EC16 -PROTHESE DE MEMBRE INFERIEUR
Article consultable sur : http://www.archives-pmr.org
OBJECTIVE: To evaluate differences in function, performance, and preference between mechanical and microprocessor prosthetic knee control technologies. DESIGN: A-B-A-B reversal design. SETTING: Home, community, and laboratory environments. PARTICIPANTS: Twenty-one unilateral, transfemoral amputees. INTERVENTION: Mechanical control prosthetic knee versus microprocessor control prosthetic knee (Otto Bock C-Leg). MAIN OUTCOME MEASURES: Stair rating, hill rating and time, obstacle course time, divided attention task accuracy and time, Amputee Mobility Predictor score, step activity, Prosthesis Evaluation Questionnaire score, Medical Outcomes Study 36-Item Short-Form Health Survey score, self-reported frequency of stumbles and falls, and self-reported concentration required for ambulation. RESULTS: Stair descent score, hill descent time, and hill sound-side step length showed significant (P<.01) improvement with the C-Leg. Users reported a significant (P<.05) decrease in frequency of stumbles and falls, frustration with falling, and difficulty in multitasking while using the microprocessor knee. Subject satisfaction with the C-Leg was significantly (P<.001) greater than the mechanical control prosthesis. CONCLUSIONS: The study population showed improved performance when negotiating stairs and hills, reduced frequency of stumbling and falling, and a preference for the microprocessor control C-Leg as compared with the mechanical control prosthetic knee. Langue : ANGLAIS |
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