方法对下颈椎不稳症21例均采用正侧双斜位及摄X线动态颈椎侧位过曲过伸片。
Methods X-ray posteroanterior, lateral, double-oblique and dynamic lateral overflexional and overextensive views were performed on 21 patients.
目的：探讨螺旋形导针配合双侧斜位X线片判断颈椎椎弓根螺钉置入孔道准确性的可行性。
Objective: To evaluate the accuracy of cervical pedicle screw pilot holes placement by bilateral oblique X-ray films with the spiral wires as the guide pin.
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