Comput. Biol. Med. - Prediction of stress shielding around an orthopedic screw: using stress and strain energy density as mechanical stimuli.

Tópicos

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Resumo

Using finite element analysis, a parametric study was developed to compare stress and strain energy density (SED), in order to determine which stimuli might be better for predicting stress shielding in bone-screw models. Defined stimuli transfer parameters demonstrated that stress and SED (strong candidates for initiating the bone remodeling process) are transferred distinctively between an implant and bone. While small diameter angled threads increased transfer of both stimuli, reducing the screw's elastic modulus resulted in an increased transfer of stress; and unexpected decrease in SED, indicating that SED should be carefully examined in the context of future bone-screw models.

Resumo Limpo

use finit element analysi parametr studi develop compar stress strain energi densiti sed order determin stimuli might better predict stress shield bonescrew model defin stimuli transfer paramet demonstr stress sed strong candid initi bone remodel process transfer distinct implant bone small diamet angl thread increas transfer stimuli reduc screw elast modulus result increas transfer stress unexpect decreas sed indic sed care examin context futur bonescrew model

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