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http://dx.doi.org/10.7736/KSPE.2016.33.11.943

Comparative Study on Biomechanical Behavior of Various Cervical Stand-Alone Cage Designs  

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)
Publication Information
Journal of the Korean Society for Precision Engineering / v.33, no.11, 2016 , pp. 943-950 More about this Journal
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
Anterior cervical discectomy and fusion; Cage; Anterior cervical plate; Cervical stand-alone cage; Finite element analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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