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Published on: February 23, 2015
The great auricular nerve: an anatomic and surgical study
Russell Murphy1, Peter Dziegielewski, Dan O'Connell
1Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Alberta, Edmonton, AB.
Summary
This study provides anatomical measurements to help surgeons identify the great auricular nerve (GAN) and avoid injury during head and neck procedures, improving patient outcomes.
Area of Science:
- Anatomy
- Surgical Anatomy
- Neuroanatomy
Background:
- The great auricular nerve (GAN) provides sensation to the lower ear and mandible.
- GAN injury during head and neck surgery significantly impacts patient quality of life.
- Limited anatomical data exists for the GAN in critical surgical areas.
Purpose of the Study:
- To define the anatomical relationship between the great auricular nerve (GAN), platysma muscle, and external jugular vein (EJV).
- To provide surgeons with reliable landmarks for GAN identification and injury prevention.
Main Methods:
- Measurements were taken during neck dissections in patients.
- Distances between the platysma posterior border, EJV, and GAN were recorded.
- The spatial relationship between the platysma and EJV was also documented.
Main Results:
- The platysma posterior border and EJV were found to be an average of 0.08 cm apart.
- The platysma was typically located posterior to the EJV.
- The average distance from the platysma to the GAN was 0.60 cm, and from the EJV to the GAN was 1.17 cm.
Conclusions:
- A surgically relevant technique for GAN identification was established.
- This anatomical data aids surgeons in avoiding GAN injury and potential long-term neurological deficits.
- The findings enhance surgical safety in head and neck procedures involving the GAN.
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