Biomechanical Characteristics of Cervical Spine After Total Disc Replacement

인공 추간판 치환술 후 경추의 생체역학적 특성

  • 박원만 (경희대학교 대학원 기계공학과) ;
  • 주증우 (경희대학교 테크노공학대학) ;
  • 김경수 (경기대학교 수학과) ;
  • 이기석 (공주대학교 기계자동차공학부) ;
  • 김윤혁 (경희대학교 테크노공학대학)
  • Published : 2009.07.01


We have analyzed the biomechanical characteristics of cervical spine after total disc replacement using finite element analysis. A finite element model of C2-C7 spinal motion segment was developed and validated by other experimental studies. Two types of artificial discs, semi-constraint and un-constraint, were inserted at C6-C7 segments. Inferior plane of C7 vertebra was fixed and 1Nm of moment were applied on superior plane of C2 vertebra with 50N of compressive load along follower load direction. Mobility of the cervical spine in which each artificial disc inserted was higher than that of intact one in all loading conditions. Also, high mobility at the surgical level after total disc replacement could lead higher facet joint force and ligaments axial stresses. The results of present study could be used to evaluate surgical option and validate the biomechanical characteristics of the implant in total disc replacement in cervical spine.


Artificial Disc;Cervical Spine;Total Disc Replacement;Finite Element Analysis


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