Table 19.

Cervical medial branch diameters202 203

Medial branch	Mean ± SD diameter (mm)*	Mean ± SD diameter (mm)†
C3 superficial medial branch (TON)	1.5±0.4
C3 deep medial branch	0.5±0.2
C4 medial branch	0.9±0.3	1.2±0.3
C5 medial branch	0.9±0.3	1.2±0.3
C6 medial branch	0.7±0.1	1.0±0.2
C7 medial branch	0.6±0.2	1.0±0.3

*Adopted from Lord et al.202

^†Adopted from Kweon et al.203