British journal of neurosurgery
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Percutaneous balloon compression is a safe and effective treatment for trigeminal neuralgia. Current technique consists of penetrating the foramen ovale using a sharp 14G needle with a stylet. Difficulty of cannulation of the foramen ovale, failures of cannulation and major neurovascular complications of the procedure, although rare, may be due to the relatively large caliber of this needle and its sharp tip. ⋯ A novel technique for cannulation of the foramen ovale is described. The use of blunt tip guides of smaller diameters instead of sharp 14 G needles considerably facilitated cannulation of the foramen ovale and enabled cannulation in all cases. Absence of complications of cannulation such as facial hematoma, carotid-cavernous fistula or intracranial hemorrhage in this series of patients suggests that the technique may be safer than the use of conventional sharp tipped 14G needles in terms of avoiding neurovascular complications.