====== Fischgold’s bimastoid line ======

{{::fischgold_s_digastric_line.png?500|}}

FDGL=[[Fischgold’s digastric line]], FBML= [[Fischgold’s bimastoid line]], x+y=total overhang of [[C1]] on [[C2]].

see [[Rule of Spence]].

joins tips of mastoid processes. The odontoid tip averages 2 mm above this line (range: 3 mm below to 10 mm above) and this line should cross the atlanto-occipital joint.