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Polyurethane inserts for comfort and injury prevention while dancing en pointe

Author(s)
Rigobon, Alexandra
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Massachusetts Institute of Technology. Department of Materials Science and Engineering.
Advisor
Michael J. Tarkanian.
Terms of use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
Pointe shoes have been made using the same rudimentary materials and methods for the past 200 years, and for this reason modern dancers lack access to more sophisticated equipment. Presented here is an insert that will last longer than a typical shoe, improve fit around the toes, and increase comfort. The insert was made from Simpact© 60A, a commercially available two-part polyurethane. Samples were tested cyclically at rates of 2, 4, and 6 mm/s in order to ensure that they would not wear out and become unusable. Inserts were also molded to the foot of a semi-professional dancer and tested to measure the force on the hallux. Using a polyurethane insert, this force was reduced to less than 10% of a ballerina's body weight. This is a dramatic improvement from an unmodified shoe, where over 60% of the dancer's weight can be on the hallux, and even a shoe with an epoxy modification, where the pressures are around 20% of the body weight. These inserts also lie completely inside the toe box of the pointe shoe, meaning they have no effect on the aesthetics of ballet. They increase comfort through improved fit and decreased force, allow ballerinas to maintain feel of the floor, and are predicted to extend the life of the pointe shoe.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2016.
 
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
 
Cataloged from student-submitted PDF version of thesis.
 
Includes bibliographical references (pages 41-42).
 
Date issued
2016
URI
http://hdl.handle.net/1721.1/104151
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering.
Publisher
Massachusetts Institute of Technology
Keywords
Materials Science and Engineering.

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  • Materials Science and Engineering - Bachelor's degree
  • Materials Science and Engineering - Bachelor's degree

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