 For C3 to C6 medial branch RFTC's, the needles are placed along the ventral aspect of a line that connects the greatest antero-posterior diameter of the articular pillar but remains dorsal to the foramen as seen on lateral imaging. 
For C3 to C6 medial branch RFTC 's , the needles are placed along the ventral aspect of a line that connects the greatest antero - posterior diameter of the articular pillar but remains dorsal to the foramen as seen on lateral imaging .