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The frontalis nerve in the temporal brow lift
Archives of Otolaryngology (Chicago, Ill. : 1960)
|April 1, 1982
Summary
This study details the safe dissection of the frontalis branch of the facial nerve during brow elevation procedures. Understanding its superficial location prevents iatrogenic injury, enhancing surgical outcomes in temporal lift operations.
Area of Science:
- Plastic Surgery
- Anatomy
- Facial Nerve Anatomy
Background:
- Brow elevation is a common cosmetic procedure.
- Potential risk of injury to the frontalis branch of the facial nerve exists.
- Precise anatomical knowledge is crucial for surgical safety.
Purpose of the Study:
- To identify the anatomical course and depth of the frontalis branch of the facial nerve.
- To determine the nerve's location relative to surgical planes during brow elevation.
- To develop a safe dissection technique for temporal lift surgery.
Main Methods:
- Dissection of 26 cadaver half heads.
- Histologic sectioning along the nerve's course.
- Analysis of the nerve's position within fascial layers.
Main Results:
- The frontalis branch of the facial nerve was consistently located in the superficial musculoaponeurotic system (SMAS) layer.
- The nerve was found superficial to the temporalis fascia.
- Its position superolateral to the brow was precisely mapped.
Conclusions:
- The frontalis branch of the facial nerve is located within the SMAS.
- A safe surgical plane for temporal lift procedures can be achieved by dissecting above the temporalis fascia.
- This anatomical understanding allows for the avoidance of facial nerve injury during brow elevation.