Anatomical and Imaging Study on the Optimum Entry Point and Trajectory for Anterior Transpedicular Root Screw Placement into the Lower Cervical Spine

Table 1

Comparison of screw lengths in different levels and zones of cervical vertebrae (cm).

	C3		C4		C5		C6		C7
	Male ()	Female ()	Male ()	Female ()	Male ()	Female ()	Male ()	Female ()	Male ()	Female ()
a
b
c
d
e
f
g
h
i

Notes: vs. male.