[Biomechanical analysis of bilateral facet joint stabilization for posterior cervical spine reconstruction with bio-derived tendon in goats].

Abstract

OBJECTIVE There is few report on dynamic stabilization for posterior cervical reconstruction. To investigate the biomechanical properties of a novel cervical spine posterior fixation using the bio-derived freeze-dried tendon in posterior cervical spine reconstruction. METHODS The palmaris longus flexor tendon and metacarpal extensor tendon were collected from the death donors' stump to prepare bio-derived tendon. Twenty fresh cervical vertebrae (C1-7) were harvested from goats and were randomly divided into 4 groups (n = 5): intact group (group A); injury control group (group B); screw-rods fixation group, fixed with screw-rods on C3, 4 (group C); tendon reconstruction group, cross-fixed with bio-derived freeze-dried tendon on C3, 4 bilatera facet joints (group D). The range of motion (ROM) values in flexion, extension, lateral bending, and axial rotation were measured. RESULTS In flexion, the ROM values of group C were significantly lower than those of the other 3 groups (P < 0.05), and the ROM values of group B were significantly higher than those of groups A and D (P < 0.05). In extension, lateral bending, and axial rotation, the ROM values of group C were significantly lower than those of groups A, B, and D (P < 0.05), and no significant difference was found within the other 3 groups (P > 0.05). CONCLUSION The novel cervical spine posterior fixation using the bio-derived frozen-dried tendon can provide enough stability in flexion motion, but it can not limit the lateral bending and axial rotation motion, which can provide dynamic stabilization in animal model.

Cite this paper

@article{Wang2012BiomechanicalAO, title={[Biomechanical analysis of bilateral facet joint stabilization for posterior cervical spine reconstruction with bio-derived tendon in goats].}, author={Beiyu Wang and Hao Liu and Weiguang Hou and Huiqi Xie and Yueming Song and Ying Hong and Rui Shi and Litai Ma}, journal={Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery}, year={2012}, volume={26 4}, pages={396-400} }