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Subfascial dissection and extended temporal muscle detachment for middle fossa approach

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Abstract

Background

The soft tissue dissection for the middle fossa approach requires adequate management of the neuro, vascular, and muscular structures in order to maximize exposure and diminish morbidities.

Methods

An incision anterior to the tragus is performed, extending from the zygomatic process to the superior temporal line. The superior temporal artery is exposed, followed by a subfascial dissection of the frontalis nerve. The temporal muscle is dissected and released from the zygoma. All cranial landmarks are exposed for the 5 × 5 cm temporal fossa craniotomy.

Conclusion

This novel approach provides a safe and adequate access to perform an extended middle fossa craniotomy.

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Data Availability

The data about the surgical approach and and anatomical landmarks are available under request for the corresponding author.

References

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Acknowledgements

The authors would like to thank Dr. Saniya S. Godil, MD, MSCI; Dr. Kyle C. Wu, MD; Dr. Mohammad B. Asawaf, MD; and Joshua Vignolles-Jeong, BA, for their help in this project.

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Authors

Corresponding author

Correspondence to Guilherme Finger.

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Ethical approval

This project was approved by the ethical board of the institution.

Informed consent

The patient consented to have parts of his surgery demonstrated in this video.

Conflict of interest

The authors declare no competing interests.

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Key points

1. Supine position with the head turned to the contralateral side and parallel to the floor.

2. Linear incision 1 cm anterior to the tragus, extending from 1 cm below the zygomatic process to 1 cm above the superior temporal line.

3. Exposure of STA with coagulation and cutting of the parietal branch.

4. Subgaleal dissection exposes the junction between the superior orbital rim and the superior temporal line at its anterosuperior limit, and the root of the zygomatic process posteroinferiorly.

5. Subfascial dissection.

6. Superficial temporalis fascia and associated fat pad are reflected anteriorly.

7. Temporal muscle subperiosteal dissection from posterior to anterior and from inferior to superior.

8. Anterior dissection of the temporal muscle.

9. Identify all cranial landmarks exposed.

10. Perform a 5 × 5 cm temporal fossa craniotomy.

This article is part of the Topical Collection on Neurosurgical technique evaluation

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Supplementary file1 (MP4 182147 KB)

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Finger, G., Kaul, V.F., Adunka, O.F. et al. Subfascial dissection and extended temporal muscle detachment for middle fossa approach. Acta Neurochir 165, 3473–3477 (2023). https://doi.org/10.1007/s00701-022-05483-5

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  • DOI: https://doi.org/10.1007/s00701-022-05483-5

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