ABSTRACT
A detailed knowledge of the infratemporal fossa and its contents is fundamental to successful regional anaesthesia in both the upper and lower jaws. The trigeminal nerve is predominantly sensory and the cell bodies of the sensory fibres are in the trigeminal ganglion which lies in Meckel’s cave in the middle cranial fossa. Three large trunks originate in the ganglion: the ophthalmic, maxillary and the mandibular divisions.
