用于治疗难复位性寰枢椎脱位的新型经口前路寰枢椎侧块融合器的生物力学研究

doi:10.13418/j.issn.1001-165x.2017.03.015

Abstract

Abstract:

Objective To compare the stabilities of the lateral mass fusion cage and iliac crest autograft combined with Transoral Atlantoaxial Reduction Plate (TARP) system and posterior C1-C2 pedicle screw-rod system. Method　Cage was designed based on the three-dimension parameters of 40 postoperative patients operated with TARP. Range of motion (ROM) in flexion-extension, left-right bending and axial rotation of 6 cadaveric specimens with different treatments were recorded. Results The measured data indicated that feasible cage design were in 3 sizes: 13/12/7/16°，12/11/7/18°，11/10/7/20°(length/width/height/sagittal angle);ROM of TARP (combined with Cage or ilium) was smaller compared with posterior C1-C2 pedicle screw-rod system and difference between left and right bending was statistically significant. Conclusion　The stiffness was analogous between TARP system (combined with cage or iliac crest autograft) and posterior C1-C2 pedicle screw-rod system. Furthermore, cage combined with TARP may simplify surgeric procedure and decrease the incidence of clinical complication.

Key words: Transoral approach, 　Atlantoaxial, 　Cage, 　Biomechanics

MO Shao-dong, AI Fu-zhi, LI Ke-wei, LI Ke-ke, CHEN Shu-jin. Biomechanical study of a novel transoral atlantoaxial lateral mass fusion cage used for irreducible atlantoaxial dislocation[J]. Chinese Journal Of Clinical Anatomy, 2017, 35(3): 307-311.

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Biomechanical study of a novel transoral atlantoaxial lateral mass fusion cage used for irreducible atlantoaxial dislocation

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