The Geometry of Precision | Frames in DBS – Functional Neurosurgery Explained – Episode 2

The Geometry of Precision | Frames in DBS – Functional Neurosurgery Explained – Episode 2 How do brain surgeons turn the head into a stable 3D coordinate system so we can place a DBS electrode within 1 mm of the target? Welcome to Episode 2 of “Functional Neurosurgery, Explained”. In this episode, I break down the core tools that make precision possible: stereotactic frames, reference systems, and the geometry behind CRW, Leksell, and newer platforms. ▶️ In this video you will learn: • Why stereotactic frames were invented and what problem they solve • How the idea of stereotaxis began with Horsley & Clarke and was adapted for humans • The basic geometry of stereotactic space and why the brain is treated as a volume • How arc‑radius frames work and why the target sits at the centre of the arc • What actually differs between CRW and Leksell frames in daily practice • Where robotic and frameless systems fit in DBS and why frames remain the reference standard This series is designed for: • Medical students and trainees curious about functional neurosurgery • Neurology and neurosurgery residents • Neuroscience and biomedical engineering students • Any clinician who wants to understand how DBS is planned and executed with millimetric accuracy I keep the language simple, avoid unnecessary jargon, and focus on clear mental models you can reuse in the operating theatre or at the workstation. 📺 Series roadmap: • Episode 1 – Finding 1 mm in the Brain (localisation) • Episode 2 – Frames and the Geometry of Precision • Episode 3 – Neuromodulation vs Neuroablation • Future episodes – Targets, physiology, and real operative workflows If you find this useful: 👍 Like the video 📝 Leave a comment (tell me which topic you want next) 🔔 Subscribe to follow the full series ––––– Links and resources: https://www.linkedin.com/in/dr-amr-moursi/ #neurosurgery #functionalneurosurgery #DBS #stereotactic #brain #neuromodulation #Parkinsons #meded