Abstract:

Objective     To explore the application of axial laminar screws combined with the atlantal  lateral mass screws fixing method in surgery of complicated atlantoaxial dislocation. Methods     6 cases of atlantoaxial dislocation complicated by dysplasia or comminuted fracture of the axial pedicle root were involved in the study. Axial laminar screws combined with the atlantal lateral mass screws fixing method was performed on the patients, followed by fusing of the atlantoaxial joint using bone grafts. Results    Satisfying reduction and stability of the cervical spine were shown in the X-ray film and CT image instantly after surgery. Adequate atlantoaxial fusion was shown in the X-ray film during follow-up. No evidence indicated  vertebral artery or spinal cord injuries. Conclusion     Axial laminar screws combined with the atlantal lateral mass screws fixing method has a perfect effect on the surgery of atlantoaxial dislocation complicated by dysplasia or comminuted fracture of the axial pedicle root.

Key words: Axis; Atlanto-axial joint; Dislocation; Internal fixation; Laminar screw