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Technical Brief

Forearm Attachment for Postamputation Weight Lifting Exercise1

[+] Author and Article Information
Carl A. Nelson, Linxia Gu

Department of Mechanical & Materials Engineering,
University of Nebraska-Lincoln,
Lincoln, NE 68588

Judith M. Burnfield

Institute for Rehabilitation Science and Engineering,
Madonna Rehabilitation Hospital,
Lincoln, NE 68506

Henry Ems, Quentin Ens

Department of Mechanical & Materials Engineering,
University of Nebraska-Lincoln,
Lincoln, NE 68588

Accepted and presented at the Design of Medical Devices Conference (DMD2014), Minneapolis, MN, April 7–10, 2014. DOI: 10.1115/1.4027030

Manuscript received February 21, 2014; final manuscript received March 3, 2014; published online April 28, 2014. Editor: Arthur G. Erdman.

J. Med. Devices 8(2), 020930 (Apr 28, 2014) (2 pages) Paper No: MED-14-1059; doi: 10.1115/1.4027030 History: Received February 21, 2014; Revised March 03, 2014

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FIGURES IN THIS ARTICLE
Copyright © 2014 by ASME
Topics: Weight (Mass) , Stress
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References

Ziegler-Graham, K., MacKenzie, E. J., Ephraim, P. L., Travison, T. G., and Brookmeyer, R., 2008, “Estimating the Prevalence of Limb Loss in the United States: 2005 to 2050,” Arch. Phys. Med. Rehabil., 89(3), pp. 422–429. [CrossRef]
HealthyPeople, 2013, “Physical Activity,” accessed 11/8/13 at http://www.healthypeople.gov/2020/topicsobjectives2020/overview.aspx?topicid=33

Figures

Grahic Jump Location
Fig. 1

FLEX device assembly: bolt, load-side assembly (gray), clamp (white), and prosthesis-side member (brown)

Grahic Jump Location
Fig. 2

Exploded view of load-side assembly (bottom–top): outer casing, PTFE washer, bolt attachment (brown), and PTFE sleeve

Grahic Jump Location
Fig. 3

Stress (top) and displacement (bottom) FEA of the eye bolt under a 45 kg (100 lb) load

Grahic Jump Location
Fig. 4

Stress (top) and displacement (bottom) FEA of the outer casing under a 45 kg (100 lb) load

Grahic Jump Location
Fig. 5

Prototype: release strap (foreground) attached to clamp collar; prosthetic attachment from bottom

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