Arteriovenous fistula of the craniocervical junction is a rare vascular malformation. Although a precise understanding of its angioarchitecture is essential for appropriate and curative treatment, a preoperative diagnosis can be difficult owing to its complexity. Intraoperative findings may provide more clues to the definitive diagnosis. In this video, the authors present an operative technique for exposing a radicular arteriovenous fistula at the craniocervical junction fed by the radicular and spinal pial arteries draining into the common intradural vein. This fistula was definitively diagnosed based on intraoperative findings and treated by disconnecting the common draining vein. The video can be found here: https://stream.cadmore.media/r10.3171/2025.7.FOCVID2526
Matsuo et al. (Wed,) studied this question.