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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Three-dimensional computer model of the human buttocks, in vivo.
    Author: Todd BA, Thacker JG.
    Journal: J Rehabil Res Dev; 1994; 31(2):111-9. PubMed ID: 7965867.
    Abstract:
    In an effort to reduce the incidence of decubitus ulcers among wheelchair users, current work in cushion design concentrates on minimizing the pressure at the buttock-cushion interface. Finite element analysis can show the stress levels throughout the soft tissue between the cushion and the ischial tuberosity and give designers a better indication of the effects of a particular cushion. Finite element models were generated of the tissues around the ischial tuberosities of male and female subjects. Linear three-dimensional models were generated using a 386 computer and solved with infinitesimal deflection theory. The resulting minimal principal stresses were 17 kPa and 15 kPa at the buttock-cushion interface for seated male and female subjects, respectively. Computational results were verified experimentally with magnetic resonance imaging and interface pressure measurements.
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