The peripheral, extraparotid course and localisation of the marginal m
andibular branch of the facial n. is described, with variations, based
on the dissection of 40 cadaver half heads. Its anatomical relationsh
ips with the ramus of mandible and facial a. are studied and morphomet
ric features are reported. Knowledge of the accurate course and relati
onship of the marginal mandibular branch should help to protect this n
erve from surgical injury.