NDLI: Comparison via Roll-Over Shape of the kinematic performance of two low-cost foot prostheses

Content Provider	IEEE Xplore Digital Library
Author	Barocio, E. Bustamante, K. Gonzalez, R.V. Huegel, J.C.
Copyright Year	2014
Description	Author affiliation: Tecnol. de Monterrey, Chihuahua, Mexico (Bustamante, K.) \|\| Fac. of Mech. Eng., Univ. of Texas at el Paso, El Paso, TX, USA (Gonzalez, R.V.) \|\| Tecnol. de Monterrey, Guadalajara, Mexico (Barocio, E.; Huegel, J.C.)
Abstract	Bench tests are not sufficient to compare the performance of foot prostheses since only the dynamic behavior can be evaluated in the testing machines. This work supplements the bench tests described by several standards with a single patient (below knee amputee) kinematic evaluation using the concept of Roll-Over Shape to compare two low-cost prostheses against the sound limb. The Roll-Over Shape is generated first, by experimentally obtaining the trajectories of the patient's ankle, knee, and center of pressure throughout the stance phase of the gait cycle; and second by mathematically transforming these trajectories into a shank-based coordinate system with the ankle as origin. Unlike previous work that compares the roll-over parameters obtained via the quasi-static method, this paper compares the roll-shape of a trans tibia amputee wearing eather a SACH foot, or a high energy return foot (TEC-LIMBS), and the contralateral sound limb. The outcomes demonstrate a lower difference in the Roll-over radius of the TEC-LIMBS foot with respect to the sound limb (<;10%), while the SACH foot presents a greater difference with respect to the sound limb (>40%). The findings of the tests performed in this study indicate that the TEC-LIMBS foot has a better kinematic performance than the SACH type prosthesis, a prosthesis widely used for humanitarian purposes.
Starting Page	1028
Ending Page	1032
File Size	181944
Page Count	5
File Format	PDF
ISBN	9781479931262
ISSN	21551774
e-ISBN	9781479931286
DOI	10.1109/BIOROB.2014.6913915
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-12
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Legged locomotion Shape Kinematics Trajectory Orthotics Foot Prosthetics
Content Type	Text
Resource Type	Article

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