Effect and Operation Strategy for Posterior C_(1、2) Transarticular Screw Fixation for Atlantoaxial Trauma or Instability;

Posterior internal fixation and bone grafting fusion for atlantoaxial fracture or dislocation;

Modified posterior atlantoaxial transarticular screw fixation for atlantoaxial instability;

Anatomy and imageology of the posterior pedicle screw fixation on atlantoaxial vertebrae of children;

The application of least square method acquires sport vestige square of atlantoaxial joint, Left is S(x)=-23.

Odontoid fracture and atlantoaxial instability treated with interlaminar clamp system;

C_(1,2) pedicle screw internal fixation for traumatic atlantoaxial instability;

Comparison among several posterior operations for the treatment of traumatic atlantoaxial instability;