Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Comparative Study on Biomechanical Behavior of Various Cervical Stand-Alone Cage Designs

경추용 일체형 추간체 유합 보형재의 디자인 변화에 따른 생체역학적 효과 비교 연구

  • Park, Kwang Min (Medical Device Development Center, Osong Medical Innovation Foundation) ;
  • Jung, Tae Gon (Medical Device Development Center, Osong Medical Innovation Foundation) ;
  • Jeong, Seung Jo (R&D Center, GS Medical Co., Ltd.) ;
  • Lee, Sung Jae (Department of Biomedical Engineering, Inje University)
  • 박광민 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 정태곤 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 정승조 ((주)지에스메디칼 기업부설연구소) ;
  • 이성재 (인제대학교 의용공학부)
  • Received : 2016.05.10
  • Accepted : 2016.09.06
  • Published : 2016.11.01
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Abstract

The purpose of this study was to evaluate and compare by finite element analysis the biomechanical performance, in terms of cervical stand-alone cage screw insert angle (Type 3 - 5: 2 Screws) and screw arrangement (Type 6 and 7: 3 Screws / Type 8 and 9: 4 Screws), and the range of motion (ROM) of traditional anterior cervical discectomy of a fusion device (Type 1: Cage / Type 2: Cage + ACP). Our study suggests that the biomechanical behavior of a postoperative cervical spine could indeed be influenced by design features, such as screw angle and number of screws. In particular, ROM and the risk of subsidence were more sensitive during extension about type 5 (Insert Angle $20^{\circ}$). Our study also suggested that the number of screw asymmetries between up and down for type 6 and 7 could result in differences in the risk of screw fracture manifesting in different clinical aspects.

Keywords

References

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