[Olfactometry after transethmoidal surgery for cerebrospinal fluid rhinorrhoea and after head injury (author's...

After transethmoidal exposure and closure of the dural defect olfactory assessments were made on 26 patients with frontal dural dehiscence. Different methods for both unilateral and bilateral assessment were applied. The incidence of abnormalities were evaluated and these were compared with a second group of 52 patients who had suffered head injury without cerebrospinal fluid rhinorrhoea. There was no significant difference in the frequency of anosmia. The practical advantage of the transethmoidal approach to the floor of the anterior cranial fossa is emphasized.