Abstract：Objective To investigate the effectiveness of application of atlantoaxial pedicle screw placement in individual treatment of atlantoaxial fracture dislocation. Methods Mimics software and rapid prototyping technology to design a new atlantoaxial pedicle screw placement in the individual, and to investigate its clinical significance. CT scan was performed in the specimens of 5 atlantoaxial adults to collect and import data into Mimics software for three-dimensional reconstruction of the specimen. And the related functions of Mimics were used to find the atlantoaxial pedicle screw axis in the three-dimensional reconstruction figure and measure the best correlation data. Then, the reconstructed three-dimensional vertebrae graphics were taken as a template. The posterior arch of atlas and spinous process were taken as anatomical landmarks to design the screw placement guide module. It guided the reconstruction of vertebral models and images in STL format into 3D printer to produce a vertebral model and guide module. And with the guide, the intraoperative pedicle screw placement was performed. Results The atlantoaxial reconstruction image and the physical model with high similarity to the specimen were successfully established. And the pedicle screw and guide module were produced. With the aid of screw placement guide module, 10 pedicle screws were placed in 5 patients. CT images showed satisfactory screw locations. Conclusion Mimics software was used to promote atlantoaxial three-dimensional reconstruction. And its position was taken as a taxidermy to make guide module so as to assist pedicle screw. It provided a personalized approach for atlantoaxial pedicle screw placement, which could obviously improve the safety of pedicle screws.
Liu GY,Xu RM,Ma WH,et al.Biomechaincal comparision of cervical transfacet pedicle screws versus pedicle screws[J].Chin Med J(Engl),2008,121(15):1390-1393.
[2]
Liu GY,Xu RM,Ma WH,et al.Biomechaincal comparision of cervical transfacet pedicle screws versus pedicle screws[J].Chin Med J(Engl),2008,121(15):1390-1393.
[3]
Abumi K,Ito M,Sudo H.Reconstruction of the subaxial cervical spine using pedicle screw instrumentation[J].Spine(Phila Pa 1976),2010,37(5):E349-E356.
Liu GY,Xu RM,Ma WH,et al.Biomechaincal comparision of cervical transfacet pedicle screws versus pedicle screws[J].Chin Med J(Engl),2008,121(15):1390-1393.
[3]
Abumi K,Ito M,Sudo H.Reconstruction of the subaxial cervical spine using pedicle screw instrumentation[J].Spine(Phila Pa 1976),2010,37(5):E349-E356.
[3]
Abumi K,Ito M,Sudo H.Reconstruction of the subaxial cervical spine using pedicle screw instrumentation[J].Spine(Phila Pa 1976),2010,37(5):E349-E356.
