Fig. 1

Preoperative preparation and postoperative bone flap display of ruptured anterior communicating aneurysm by reconstruction clipping via supraorbital lateral keyhole approach. a The patient had a ruptured anterior communicating artery aneurysm. The patient’s head was slightly left to the upper three-point skull frame, which was connected with electrophysiological monitoring. The arrow showed the approximate range of bone flap. b Postoperative 3D-CTA showed that the bone flap was well fixed