[Treatment of atlanto-axial vertebral instability fractures with cervical posterior pedicle screw internal fixation and interbody fusion].

Objective:To explore the clinical effects of cervical posterior pedicle screw internal fixation and interbody fusion for the treatment of atlanto axial vertebral instability fractures. Methods:From July 2008 to July 2013,21 patients with atlanto axial vertebral instability fractures were treated with vertebral pedicle screw internal fixation and interbody fusion through posterior approach. There were 14 males and 7 females,aged from 20 to 55 years old with an average of 32 years. Lifted and guided the atlanto axial vertebral pedicle screw to reduce atlanto axial vertebral displacement. Results:All patients were followed up from 6 to 24 months with an average of 12.5 months. Wounds got healed without complication of infection. Clinical symptoms were relieved at 6 months after operation. According to ASIA score standard to assess at 6 months after operation,the items of motion,light touch and needle score had obviously improved,and respectively were 99.45±0.27,111.09±0.47,111.11±0.58. VAS and NDI scores also had obviously improved,and respectively were 1.04±0.38 and 12.56±2.24. Imaging examinations showed internal fixation locations were good,without atlanto axial joint instability. Conclusion:Cervical posterior pedicle screw internal fixation and interbody fusion can effectively restore the stability of atlanto axial joint,reduce complication and obtain satisfactory effects.