Objective A new method of radiograghic measurement is introduced to determine the sensitive indices for defining the cervical foramina stenosis in different flexion―extension motion.

Applied microanatomy of cervical nerve and its related structure;

Objective To investigate treatment of using the method of neurolysis for cervical nerve compressing of the entrapment syndrome outside spinal aperture.

Methods The sagittal width and height of the intervertebral foramen and its spinal nerve roots as well as the width of the lateral opening of the spinal nervous sulcus and its external diameters of spinal nerves were measured on 60 cases (male 28,female 32) adult cadavers (total 120 sides).

Anatomic study of the cervical dorsal rami nerve;

Applied anatomy of cervical nerve root groove and cervical intervertebral foramen;