Chinese Journal of Clinical Anatomy >
Biomechanical evaluation of stability of implantation of transoralatlantoaxial lateral mass fusion cage
Received date: 2013-12-08
Online published: 2014-06-04
Objective To evaluatethe biomechanical properties of the fusion cage combined with Type ⅢTransoralAtlantoaxial Reduction Plate(TARP) system and posterior C1-C2 pedicle screw-rods system. Methods 6 fresh-frozen human cervical spines were used for study in five different groups. Range of motion (ROM) in flexion-extension, left-right bending, and axial rotation was recorded by Motion Analysis, co.6 Eagle. Results According to the anatomic data, the ring shape of the cage was feasible and the parameters: 3.5 mm height, 6 mm inner diameter, and 12mmouter diameter. The cage was made of Poly Ether EtherKetone(peek).The difference in stiffness between the TARP and C1-C2screw-rods was not statistically significant in the same implant groups. The ROM of cage groups was smaller compared with ilium groups and the difference in flexion-extension was statistically significant. Conclusions TARP system fixation or pedicle screw-rods fixation was significantly stiffer than the iliumgroup in atlantoaxial fusion. Moreover, smaller postoperative complications render it to have a better prospect of clinical application in clinical practice.
Key words： Atlantoaxial; Anterior approach; Cage; Bionmechanics
ZHANG Hao-Na , YIN Qiang-Shui , LIU Gui-Yang , YANG Chao , HUANG Wen-Hua . Biomechanical evaluation of stability of implantation of transoralatlantoaxial lateral mass fusion cage[J]. Chinese Journal of Clinical Anatomy, 2014 , 32(3) : 348 -350 . DOI: 10.13418/j.issn.1001-165x.201
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