A Highly Flexible Prosthetic Foot to Facilitate Kneeling for Transtibial Amputees

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A Highly Flexible Prosthetic Foot to Facilitate Kneeling for Transtibial Amputees

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Title: A Highly Flexible Prosthetic Foot to Facilitate Kneeling for Transtibial Amputees
Author: Fraser, Ashley; Kolaczek, Sandra; Usprech, Jenna; Fetterly, Sayward
Abstract: In this paper a new prosthetic foot is presented to solve the problem of limited ankle range of motion, while still maintaining natural gait patterns and stability. The design consists of separate physiological ankle ranges of motion for kneeling and walking that were implemented through the use of a modified ball and socket joint. The foot rotates around the ball in the anterior/ posterior direction during gait and translates into the second groove when plantar flexion rotation exceeds 40?, in order to be able to rotate further in kneeling. Additionally, viscoelastic rubber ligaments and skin materials provide essential compliance and resistance to the foot. A 3D prototype was created for this design which successfully demonstrated the full ankle range of motion during kneeling and during gait, with controlled transition between each motion.
URI: http://hdl.handle.net/10214/1628
Date: 2007


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