Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (30): 5531-5534.doi: 10.3969/j.issn.1673-8225.2011.30.006

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Finite element analysis of anti-impact loading of wrist protectors

Dong Xie-ping1, Wang Dong-mei2, He Jian-ying1, Zhou Li-yi1, Wang Jin-cheng1, Wu Xiao-hui1   

  1. 1Jiangxi Provincial People’s Hospital, Nanchang  330006, Jiangxi Province, China
    2Shanghai Jiao Tong University, Shanghai  200020, China
  • Received:2011-02-24 Revised:2011-05-31 Online:2011-07-23 Published:2011-07-23
  • Contact: He Jian-ying, Attending physician, Jiangxi Provincial People’s Hospital, Nanchang 334000, Jiangxi Province, China hejianying1980@sohu.com
  • About author:Dong Xie-ping, Chief physician, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi Province, China He Jian-ying, Master, Attending physician, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi Province, China Dong Xie-ping and He Jian-ying equally contributed to this paper.
  • Supported by:

    the Science and Technology Support Program during the Eleventh-Five-Year Plan, No. 2008BAI68B06*

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Abstract:

BACKGROUND: Skidproof wrist protection devices can well protect the waist.
OBJECTIVE: To analyze the efficacy of wrist protectors against fracture using three-dimensional finite element analysis.
METHODS: Based on original data of Mechanical Virtual Human of China, three-dimensional finite element models of wrist with normal soft tissues and wrist wearing protectors were established using Abaqus6.51 software. The model was subjected to loading of 2 m/s. Stress-strain distribution of finite element model of the wrist before and after protectors wearing was compared, and maximum stress variation with time in the distal ulna was analyzed.
RESULTS AND CONCLUSION: Compared with wrist not wearing protectors, the equivalent stress at soft tissues of hypothenar eminence, dorsal wrist, inferior segment of the radioulna, and distal radioulna was significantly decreased, which the stress at the second and fourth metacarpal bone, proximal segment of the index finger, and hamate bone was significantly increased, indicating the wrist protector can disperse, or transfer some stress from the distal radius and ulna to the wrist, palm or digital bone, thereby playing a positive role in preventing dital radial and ulnar fractures.

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