Advanced surgical approach for selective amygdalohippocampectomy through neuronavigation

Area of Science:

• Neurosurgery
• Medical Technology

Background:

• The transsylvian approach to selective mesiobasal temporal structure removal offers effective seizure control.
• Traditional methods rely on landmark-guided sylvian fissure exposure, risking vasospasm and vessel damage.

Purpose of the Study:

• To reduce reliance on anatomic landmarks in selective amygdalohippocampectomy using neuronavigation.
• To enhance surgical precision and minimize complications associated with traditional approaches.

Main Methods:

• 16 selective amygdalohippocampectomies were performed using optically guided neuronavigation systems (SMN or StealthStation).
• Enhanced safety protocols included intraoperative rereferencing and precise dural incision.
• Neuronavigation guided the surgical approach, minimizing the need for extensive landmark identification.

Main Results:

• Neuronavigation allowed for precise targeting of the limen insulae and temporal horn tip.
• The extent of sylvian fissure opening was minimized to the required extent for the transventricular approach.
• This reduced the exposure of the insula compared to traditional methods.

Conclusions:

• Computer-assisted surgery effectively eliminates the need for extensive landmark exposure in selective amygdalohippocampectomy.
• This technique combines precise targeting with reduced cortical and vessel trauma.
• Neuronavigation offers a safer and more accurate alternative for temporal lobe epilepsy surgery.