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Coupled motion of cervical spine in three level hybrid constructs

Issue title: Frontiers in Biomedical Engineering and Biotechnology – Proceedings of the 4th International Conference on Biomedical Engineering and Biotechnology, 18–21 August 2015, Shanghai, China

Guest editors: Feng Liu, Dong-Hoon Lee, Ricardo Lagoa and Sandeep Kumar

Article type: Research Article

Authors: Liao, Zhenhuaa; b | Pu, Tingc | Gu, Hongshengd | Liu, Weiqianga; b; *

Affiliations: [a] Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China | [b] Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China | [c] Machinery technology development CO LTD, Beijing 100044, China | [d] Shenzhen Second Hospital, Shenzhen 518039, China

Correspondence: [*] Address for Correspondence: Weiqiang Liu, Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China. Tel.: +86 0755 26551376; Fax: +86 0755 26551380; E-mail: [email protected].

Keywords: Cervical spine, coupled motion, hybrid surgery, fusion, cervical disc replacement

DOI: 10.3233/BME-151355

Journal: Bio-Medical Materials and Engineering, vol. 26, no. s1, pp. S637-S645, 2015

Published: 2015
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To compare the biomechanical characters of three-level anterior cervical fusion and hybrid constructs by measuring coupled motion changes of the cervical spine, Eighteen adult human cadaveric cervical spines were biomechanically investigated under eccentric displacement control in lateral bending and axial rotation by measuring vertebral motion (X, Y, Z -axis).The 3DPD condition displayed similar coupled motion compared to the intact condition both in lateral bending and in axial rotation, while the 3PDP condition was similar only in lateral bending. However, the coupled motion of the cervical spine under 3P conditions markedly changed in both lateral bending and axial rotation. Considering the coupled motion characteristics, the 3DPD hybrid construct is biomechanically advantageous in three types of reconstructions (3DPD, 3PDP, 3P).

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