Abstract:

BACKGROUND: Children’s bone structure of the pedicle anatomy is often complicated and variable, the three-dimensional model of odontoid process fracture via three-dimensional reconstruction can be used to guide the surgery and improve the success rate of surgery.
OBJECTIVE: To study an accurate digital model of pathologic odontoid process fracture in pediatrics and its clinical applications.
METHODS: One child with pathologic odontoid process fracture, 2 years old, was chosen, and his slice scanning CT images were read by Simpleware software for three-dimensional reconstruction. Based on reverse engineering and rapid prototyping technique, the individual skeleton model was obtained. Subsequently treated by resin, the model was guided to the surgery.
RESULTS AND CONCLUSION: The three-dimensional model of pediatric atlantoaxial including odontoid process was successfully established. With the model, the region could be directly observed, and the position and angel of screw fixation could be measured accurately, which played a good role on the operation design. The three-dimensional model intuitively and accurately reflected the structure of patient’s atlantoaxial and odontoid fracture, which improved the safety and accuracy of atlantoaxial pedicle screw fixation.