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한국생산제조학회 학술지 영문 홈페이지
[ Papers ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 5, pp.452-459
ISSN: 2508-5107 (Online)
Print publication date 15 Oct 2018
Received 05 Sep 2018 Revised 10 Oct 2018 Accepted 10 Oct 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.5.452

척추경 나사못 선택을 위한 기계적 평가와 생체역학적 분석

하명헌a ; 홍민성b ; 이문구b, *
Mechanical Evaluation and Biomechanical Efficacy Analysis of Pedicle Screw Design
Myung Heon Haa ; Min-Sung Hongb ; Moon Gu Leeb, *
aSolgo Biomedical, 154, Seotan-ro, Seotan-myeon, Pyeongtaek, Gyeonggi-do, 17704, Korea
bDept. of Mech. Eng., Ajou University, 206, Worldcup-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16499, Korea

Correspondence to: *Tel.: +82-31-219-2338 Fax: +82-31-219-1611 E-mail address: moongulee@ajou.ac.kr (Moon Gu Lee).

Abstract

Owing to the extended average life expectancy and continued labor by older people, incidence of spinal degenerative diseases, such as spondylolisthesis and lumbar spinal stenosis, has increased. Surgical treatments of these diseases involve procedures to correct the deformation of the vertebrae using implantable devices such as pedicle screws, rods, nut screws, and lumbar interbody fusion cages. Mechanical evaluations of the pedicle screw design have thus far been limited by the consideration of only the pitch and lead of the screw's thread. In this study, we propose pedicle screws of various shapes and evaluate their mechanical strengths according to ASTM standards. In addition, biomechanical finite element models are established to overcome the limits of the tests and experiments. The stresses of individual screws and vertebrae were analyzed in detail according to the pullout forces and screw designs of the models.

Keywords:

Pedicle screw, Pullout test, Compressive bending test, Finite element analysis

Acknowledgments

이 성과는 2018년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. NRF-2018R1A2B2002683)

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