A comparative student of conventional and energy-storing prosthetic feet in high-functioning transfemoral amputees

GRAHAM, Lorraine E., DATTA, Dipak, HELLER, Ben, HOWITT, John and PROS, Dip (2007). A comparative student of conventional and energy-storing prosthetic feet in high-functioning transfemoral amputees. Archives of Physical Medicine and Rehabilitation, 88 (6), 801-806.

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Official URL: http://www.archives-pmr.org/article/S0003-9993(07)...
Link to published version:: 10.1016/j.apmr.2007.02.028

Abstract

OBJECTIVE: To compare the results of gait analysis, timed walking tests, and socket comfort for transfemoral amputees wearing initially a Multiflex conventional prosthetic foot and then a Vari-Flex energy-storing prosthetic foot. DESIGN: Experimental crossover trial. SETTING: A regional prosthetic and amputee rehabilitation tertiary referral center in a teaching hospital. PARTICIPANTS: Six established unilateral transfemoral prosthetic users. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Gait analysis, a timed walking test, and a Prosthetic Socket Fit Comfort Score for each amputee wearing the Multiflex foot and then repeated wearing the Vari-Flex foot. RESULTS: Wearing the Vari-Flex foot, our subjects walked faster in the gait lab (1.38 +/- 0.13 m/s, P < .001) and took more equal step lengths at fast speed (1.063 +/- 0.05, P < .05). They also had greater peak ankle dorsiflexion at push-off on the prosthetic side (18.3 degrees +/-4.73 degrees, P<.001) and 3 times as much power from the prosthetic ankle at push-off (1.13 +/- 0.22 W/kg, P < .001). There were no significant changes in temporal symmetry or loading of the prosthetic limb, in the timed walking test with each foot, or in the comfort score. CONCLUSIONS: A transfemoral amputee who wears an energy-storing foot can have a more symmetric gait with regard to some measures of spatial symmetry, kinetics, and kinematics than one who wears a conventional foot. However, in this study important aspects such as more symmetric loading and comfort did not differ significantly between the 2 foot types.

Item Type: Article
Research Institute, Centre or Group: Centre for Sports Engineering Research
Identification Number: 10.1016/j.apmr.2007.02.028
Depositing User: Carole Harris
Date Deposited: 07 Jun 2016 11:14
Last Modified: 07 Jun 2016 11:14
URI: http://shura.shu.ac.uk/id/eprint/12334

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