Lang J, Reiter U
Neurochirurgia (Stuttg). 1984 Nov;27(6):159-61. doi: 10.1055/s-2008-1054211.
The mean length of the fifth nerve in the posterior fossa is 13.38 mm (medial portion) and 12.01 mm (lateral portion). Measurements of the triangular part of the trigeminal nerve, its branches and its central (vulnerable) part, are also described.