Neuroanatomical refinement of Kocher's point for enhanced precision in ventriculostomy: A technical note and a literature review.

Background: This study was designed to assess the effectiveness and safety of using a modified Kocher's point for ventriculostomy using endoscopic third ventriculostomy (ETV) and external ventricular drainage (EVD) in 200 patients at PAR Private Hospital in Erbil, Iraqi Kurdistan. Methods: In this retrospective analysis, a total of 200 patients who were diagnosed with obstructive hydrocephalus and underwent ETV and EVD utilizing a modified entry site were included. The revised Kocher point was located 11.5 cm posterior and superior to the nasion, 3 cm laterally, and 0-1 cm before the coronal suture. Results: The use of this modified Kocher's point has brought much improvement in surgical precision and safety. This would minimize incidences of bleeding and misplacement of the catheters. The anatomical structure was well organized, and nothing was challenging in the process of traversing through the foramen of Monro into the third ventricle. It was easily introduced through the modified Kocher point with increasing efficacy and near zero possibility of sustaining injury to the limiting cerebral region. Conclusion: Using the modified point of Kocher provides added reliability and accuracy to ventriculostomy, thereby reducing complications and increasing the overall outcome of surgeries. It overcomes all the drawbacks of classical entry sites and, further, helps in increasing the productivity of ETV and EVD. More research must be done to support the benefits of this modification in other clinical settings.