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author:

Chen, Riqi (Chen, Riqi.) [1] | Zhang, Jianxing (Zhang, Jianxing.) [2] | Jiang, Kunsheng (Jiang, Kunsheng.) [3]

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Abstract:

In this paper, stress distribution in patella was studies by 3-D photoelastic experiments and finite element calculations. The experimental conditions were in good agreement with that of body mechanics: (1) The ratios of m. quadrieeps femoris force FQ to lig. patella force FP were 1.03-1.42. (2) The angles between FQ and FP were 8.4 ° -18.7 °. (3) The ratio of modulus of elasticity for epoxy resin and silicone rubber matched that for patella and cartilage, i.e., 145:1. The principal stresses and their path line, normal stresses, contact stresses between patella and ossis femoris were determined in various flexion angles (15 °, 30 °, 45 °, 60 °, 75 °, 90 °). Two of the correlations were: (1) Maximum principal stress in the front of patella (equation presented) (2) Maximum contact stress between patella and ossis femoris (equation presented) where W was body weight subjected by a single foot. It was proved that the transverse break of patella resulted from the case that the principal stress in the front of patella exceeded ultimate tensile strength. And Tension Band Wiring (TBW) therapy conformed to the law of physiological stress field. A modified K-needles position in TBW therapy was suggested. These results are useful for further research of human patella mechanics and recovery therapy. No similar result has been found in American MED LIN Data Bank. © 1991 SPIE. All rights reserved.

Keyword:

Biomechanics Elasticity Epoxy resins Holography Photoelasticity Physical optics Physiological models Silicones Speckle Stress analysis Stress intensity factors Tensile strength

Community:

  • [ 1 ] [Chen, Riqi]Department of Civil Engineering, Fuzhou University, China
  • [ 2 ] [Zhang, Jianxing]Fujian Institute of Traditional Medicine, China
  • [ 3 ] [Jiang, Kunsheng]Fuzhou Architectural Designing Institute, Fujian, China

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ISSN: 0277-786X

Year: 1991

Volume: 1554

Page: 407-417

Language: English

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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