第Ⅲ代经口寰枢椎复位钢板系统三维稳定性评价

Abstract

Abstract:

Objective To compare the in vitro biomechanics of Type Ⅲ Transoral Atlantoaxial Reduction Plate(TARP) system, with that of conventional posterior atlantoaxial pedicle screw-rods system, and provide biomechanical basis for clinical application. Methods 6 fresh-frozen human cadaveric cervical spines with occiput (C0~3) were used. Three different groups were examined: (1) control group (intact) (n= 6); (2) TARP group (n= 6); (3) pedicle screw-rods group (n= 6). All specimens were evaluated in flexion-extension, left-right bending, and left-right axial rotation with Motion Analysis in a cadaveric C1-2 fixation model with a nondestructive flexibility method using a nonconstrained skill. Results Stiffness in any direction was significantly higher in the TARP group and pedicle screw-rod group than in control group (intact). The difference in stiffness between the TARP group and pedicle screw-rod group was not statistically significant. Conclusions Experimentally, the TARP-Ⅲ system fixation and pedicle screw-rods fixation methods were significantly stiffer than the control group. The anterior TARP-Ⅲ system provided stiffness equal to posterior pedicle screw-rods fixation. Therefore, TARP-Ⅲ system seems reasonable that the reliable and rigid fixation would be the method of choice.

Key words: Atlantoaxial, Anterior approach, Posterior approach, Internal fixation, Bionmechanics

CLC Number:

R318.01

DAN Lin, JIA Gong, DIAO Wei-Dong, LIU Ya-Pu, YANG Qiang-Lei, YIN Qiang-Shui. Three-dimensional Stability of Type Ⅲ Transoral Atlantoaxial Reduction Plate (TARP) System[J]. Chinese Journal Of Clinical Anatomy, 2012, 30(3): 342-344.

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Three-dimensional Stability of Type Ⅲ Transoral Atlantoaxial Reduction Plate (TARP) System

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