The Neurosurgical Atlas

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The Neurosurgical Atlas

The Neurosurgical Atlas is the most popular and comprehensive resource for microsurgical techniques in the world.
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The Neurosurgical Atlas is the most comprehensive regularly updated atlas on the web, keeping neurosurgeons abreast of cutting edge technical nuances. We aim to teach techniques to improve patients' safety and surgical outcome. Our vast collection of surgical videos and illustrations provide a clear and concise road map while elucidating surgical nuances for proper completion of even the most difficult procedures. The site also features resources for patients at http://www.neurosurgicalatlas.com/video-conference-center

11/22/2025

In this operative video, Dr. Cohen demonstrates a frontotemporal approach for evacuation of a hematoma and clipping of an MCA aneurysm.

The Sylvian fissure, frontal lobe, and temporal lobe were exposed. A corticotomy was made at the site of hemorrhage to decompress the brain and access the aneurysm corridor. The hematoma was evacuated while leaving a clot over the dome for protection. The M1 segment was identified within the fissure and followed distally to the bifurcation. A temporary clip was applied to M1, and circumferential dissection of the aneurysm was carried out. A curved permanent clip was placed to completely exclude the aneurysm while preserving all branch vessels.

Learn more here: https://zurl.co/xpcp9

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

11/13/2025

In this operative video, Dr. Cohen demonstrates a combined retrosigmoid and supracerebellar approach for resection of a petroclival epidermoid cyst.

Working between the nerves, tumor fragments are removed circumferentially around the third cranial nerve. This complex tumor involves several cranial nerve complexes, characteristic of epidermoid tumors that encase rather than displace neurovascular structures. Small portions of tumor embedded along the posterior aspect of the fifth cranial nerve and its root entry zone are carefully removed. The fifth nerve is gently mobilized to expand the operative corridor through the supratrigeminal and infratrigeminal triangles. Dissection continues toward the sixth cranial nerve and the entry zone of the brainstem.

Learn more here: https://zurl.co/EyIZb

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

11/05/2025

In this operative video, Dr. Cohen demonstrates an orbitozygomatic approach for resection of a spheno-orbital meningioma.

The portion of periorbita infiltrated by tumor is separated from orbital fat, with resection limited at the level of the superior orbital fissure. The affected dura is then incised, and the intradural tumor is removed in standard fashion while preserving all arachnoid membranes. The middle meningeal artery is identified and coagulated, and the soft frontal dura involved by tumor is resected back to normal-appearing margins. Dural edges are coagulated to minimize recurrence. A free pericranial graft is used to reconstruct the dural defect, and the orbital rim and calvarial defect are reconstructed using an implant and titanium mesh.

Learn more here: https://zurl.co/E8ITX

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

10/29/2025

In this operative video, Dr. Cohen demonstrates the retromastoid approach for resection of a medium-sized acoustic neuroma.

The vestibulocochlear nerves are disconnected when hearing is non-functional preoperatively. The arachnoid bands are separated from the tumor capsule near the root exit zone of the facial nerve, maintaining intact peeled surfaces. Continuous mapping is performed with stimulation to confirm the course of the facial nerve and avoid overstimulation that may cause postoperative paresis. Once the tumor is mobilized anteriorly and the nerve fully visualized, ENT colleagues conduct the intracanalicular portion of the surgery. The dura over the internal auditory canal is stripped, and drilling achieves 270-degree skeletonization.

Learn more here: https://zurl.co/gLRLe

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

10/24/2025

Watch the full recording of the SBMT × ATLAS webinar: AI-Powered Clinical Reasoning: Real-Time Decision Support in Neuroscience & Beyond.

Discover how AI-driven systems are redefining medical decision-making — from adaptive case analysis to real-time intraoperative support.

Watch now: https://youtu.be/gPJ8GGXLA2Q

10/21/2025

Last Chance to Register — Only 2 Days Away!

Don’t miss the SBMT × ATLAS webinar:
AI-Powered Clinical Reasoning — Real-Time Decision Support in Neuroscience & Beyond

Join leading experts exploring how emerging tools are shaping modern clinical reasoning and surgical decision-making through real-world case analysis and live demonstrations.
Secure your spot before it fills | https://zurl.co/2Wvgt

Please note, the start time for the webinar has been moved to 9:30 AM PDT

10/19/2025

As a neurosurgeon, three key factors are critical to skill development:

• Objective self-reflection and learning from all experiences.
• Confidence to tackle complex cases and prioritize patient welfare.
• Visionary innovation, always questioning old methods and adopting new techniques.

Want to learn more about what it takes to be a neurosurgeon? Log in to Neurosurgical Atlas to learn more about these principles and explore essential resources. | https://zurl.co/5zVcq

10/17/2025

In this operative video, Dr. Cohen demonstrates the transcranial approach for resection of a pituitary adenoma.

The patient had previously undergone an endoscopic transnasal resection, but residual tumor was noted on post-operative MRI. A pterional craniotomy was performed, the Sylvian fissure was widely dissected, and a subfrontal trajectory used to reach the opticocarotid region. The arachnoid bands around the optic nerves were disconnected, and the tumor capsule was incised. The tumor was further evacuated with ring curettes medial to the carotid artery while carefully preserving perforating vessels. The superior carotid triangle was avoided due to obstructive perforators. Portions of the capsule adherent to the optic nerve and thalamus were left in place to prevent injury. Postoperative imaging confirmed optic nerve decompression.

Learn more here: https://zurl.co/hgo4n

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

10/13/2025

AI-Powered Clinical Reasoning: Real-Time Decision Support in Neuroscience & Beyond

Explore how emerging tools are changing the landscape of medical decision-making — from dynamic case analysis to real-time support in the operating room.

Join the SBMT × ATLAS webinar for an open discussion and live demonstrations featuring experts at the intersection of neuroscience and intelligent systems.

Register now: https://zurl.co/QE8WA

10/12/2025

Explore brainstem surgical approaches in 3D or VR with this interactive model from the Neurosurgical Atlas. This model demonstrates the deep structures and surrounding cerebrovasculature critical for safe navigation in complex cranial surgery. Click “How to use this model” for instructions. Log in or subscribe today | https://zurl.co/EMAZL

10/07/2025

In this operative video, Dr. Cohen demonstrates the frontotemporal approach for resection of a vascular metastasis in the inferior frontal lobe.

The Sylvian fissure is exposed and the tumor is visualized peeking through the inferior frontal gyrus. A small corticotomy is performed to access the lesion. Circumferential dissection is used to disconnect the capsule from the surrounding brain, as entry into these metastases can lead to significant bleeding. The tumor is removed en bloc when possible, with preservation of an encased MCA branch by leaving a small remnant of tumor on the artery to maintain patency. Gliotic margins are inspected and hemostasis is secured.

Learn more here: https://zurl.co/Yp2MT

09/30/2025

In this operative video, Dr. Cohen demonstrates the resection of an inferior posterior frontal glioma of the non-dominant hemisphere.

The tumor is visualized at the posterior Sylvian fissure, just inferior to the motor and somatosensory cortices. Sleep mapping is performed for motor and somatosensory function, which confirms no functional tissue overlying the tumor, permitting safe resection. White matter dissection is performed using bipolar forceps as scissors, carefully peeling the tumor from surrounding tracts while protecting deep vessels. Vessels feeding the tumor are sacrificed, while those leading to motor and somatosensory cortices are preserved. The tumor is progressively removed until clear margins are obtained.

Learn more here: https://zurl.co/o0BF1

This post contains surgical content intended for educational use by medical professionals. Viewer discretion is advised.

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