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Background <p>Petroclival and brainstem lesions remain challenging to access due to their deep-seated location and proximity to critical neurovascular structures.</p> Method <p>We describe the step-by-step technique of the standard extradural anterior transpetrosal approach, and its extensions, illustrated through cadaveric and surgical illustrations. A surgical video demonstrates its application in a patient with a petroclival meningioma with posterolateral extension.</p> Conclusion <p>The extradural anterior transpetrosal approach provides a direct «&#xa0;looking-down» trajectory to petroclival lesions with minimal brain retraction, making it a valuable route for safe and effective access to this complex anatomical region.</p>

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Extradural anterior transpetrosal approach: how I do it

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月15日

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  • Thibault Passeri,
  • Gabriel C. Heemann,
  • Michelle Grouls,
  • Sébastien Froelich

摘要

Background

Petroclival and brainstem lesions remain challenging to access due to their deep-seated location and proximity to critical neurovascular structures.

Method

We describe the step-by-step technique of the standard extradural anterior transpetrosal approach, and its extensions, illustrated through cadaveric and surgical illustrations. A surgical video demonstrates its application in a patient with a petroclival meningioma with posterolateral extension.

Conclusion

The extradural anterior transpetrosal approach provides a direct « looking-down» trajectory to petroclival lesions with minimal brain retraction, making it a valuable route for safe and effective access to this complex anatomical region.