Cluster headache is a rare form of primary headache characterised by intense unilateral pain and autonomous nerve symptoms. Pharmacological treatments are sometimes insufficient, which calls for surgical alternatives in treatment refractory cases. Stimulation of the sphenopalatine ganglion (SPG) is a new method shown to be effective for preventing and treating attacks.
The ATI SPG microstimulator is designed to be fixed on the posterior maxilla, with the integrated lead extending into the pterygopalatine fossa to electrically stimulate the sphenopalatine ganglion (SPG) as a treatment for cluster headache. Preoperative surgical planning to ensure the placement of the microstimulator in close proximity (within 5 mm) to the SPG is critical for treatment efficacy. The aim of this study was to improve the surgical procedure by navigating the initial dissection prior to implantation using a passive optical navigation system and to match the post-operative CBCT images with the preoperative treatment plan to verify the accuracy of the intraoperative placement of the microstimulator.