In this issue of Neurosurgery Clinics, guest editor Dr. Michael T. Lawton brings his considerable expertise to the topic of Update on Open Vascular Surgery. The field of open vascular neurosurgery has undergone significant change as endovascular technologies have advanced and endovascular market share has grown. In this issue, top experts in the field explore various responses to these trends, providing valuable information to neurosurgeons aspiring to stay current with contemporary management of aneurysms, brain arteriovenous malformations, cavernous malformations, and bypass techniques. - Contains 15 practice-oriented topics including wide neck and bifurcation aneurysms: balancing open and endovascular therapies; application of big data in vascular neurosurgery; rethinking cerebral bypass surgery; AI, machine learning and cavernous malformations; the transcavernous approach in vascular neurosurgery; and more.  - Provides in-depth clinical reviews on open vascular surgery, offering actionable insights for clinical practice.  - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.