Endoscopy and stereotaxy for aneurysms.

The combination of the endoscope and frameless stereotaxy improves surgical results by allowing the surgeon to look around structures and into tight spaces, monitor the success of aneurysm clipping, decrease the risk of perforator or cranial nerve injury, plan the surgical approach, and track surgical instruments in the surgical field. This article discusses the use of endoscopy and frameless stereotaxy in aneurysm surgery.