Scoliosis corrective force estimation from the implant rod deformation

Remel A. Salmingo, Bijay Giri, Kazuhiro Fujisaki, Seishin Takao, Shigeru Tadano, Yuichiro Abe, Manabu Ito

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The effective surgical treatment of severely curved scoliosis is achieved through fixation of implants to modify the spine curve and to apply the suitable corrective forces. In such corrected spine structure with implant rods, load conditions of the spine after treatment could be estimated by detecting the deformation of the rods. In this study, in vivo forces estimation method for corrected spine was proposed using the measurements of rod geometry change. The forces applied at the fixation screws at vertebra were calculated using finite element method. Force estimation in actual scoliosis treatment was conducted from the rod geometry data before and after the surgical treatment. Forces distribution of a rod was analyzed as elastic-linear plastic material.
Original languageEnglish
Title of host publicationProceedings of Robotics and Mechatronics Division
PublisherThe Japan Society of Mechanical Engineers
Publication date2010
Publication statusPublished - 2010
Externally publishedYes
Event ROBOMEC 2010 - Asahikawa, Hokkaido, Japan
Duration: 13 Jun 201016 Jun 2010


Conference ROBOMEC 2010
CityAsahikawa, Hokkaido

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