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Cranial Nerve V: The Trigeminal Nerve Stemming from the lateral superior margin of the left and right side of the pons, this nerve branches into three: V/I ophthalmic, V/II maxillary and V/III mandibular nerves. These branches exit the skull through the superior orbital fissure (V/I), the foramen rotundum (V/II) and the foramen ovale (V/III). This nerve governs the sensory innervation of the face, sinuses and teeth.
2-5% of the time, a disc herniation will occur in the far lateral position. This location is part of the spine outside the spinal canal. The exiting nerve travels through the foramen (exit hole) and lies next to the disc wall here.A disc herniation at this far lateral location will compress the nerve.The nerve becomes tented over the herniation as it exits into the muscle (the psoas) on the side of the spine.he exiting nerve travels through the foramen (exit hole) and lies next to the disc wall here. A disc herniation at this far lateral location will compress the nerve. The nerve becomes tented over the herniation as it exits into the muscle (the psoas) on the side of the spine.