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The ansa cervicalis revisited.

M Loukas1, A Thorsell, R S Tubbs

  • 1Department of Anatomical Sciences, St. George's University, School of Medicine, Grenada, West Indies. edsg2000@yahoo.com

Folia Morphologica
|June 28, 2007
PubMed
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Anatomical variations of the ansa cervicalis (AC) are significant in recurrent laryngeal nerve surgery. Understanding these variations helps prevent nerve damage during oesophageal cancer operations.

Area of Science:

  • Anatomy
  • Surgical Neurology
  • Otolaryngology

Background:

  • Recurrent laryngeal nerve paralysis is a significant complication of oesophageal cancer surgery.
  • Nerve-muscle transplantation involving the ansa cervicalis (AC) is a preferred method for recurrent laryngeal nerve reconstruction.

Purpose of the Study:

  • To investigate the anatomical variations of the ansa cervicalis (AC).
  • To provide data to avoid iatrogenic injuries and facilitate surgical procedures during oesophageal cancer surgery.

Main Methods:

  • Examination of 100 adult human formalin-fixed cadavers.
  • Detailed analysis of the origin, distribution, and course of the ansa cervicalis and its roots.

Main Results:

  • The ansa cervicalis exhibited considerable variation in origin and distribution.

Related Experiment Videos

  • The superior root originated superior to the digastric muscle in 92% of cases.
  • The inferior root's course relative to the internal jugular vein and carotid arteries showed significant variability.

    • Conclusions:

    • Detailed knowledge of ansa cervicalis (AC) anatomy is crucial for nerve grafting procedures.
    • Awareness of AC's anatomical relationships to neck vasculature is vital for surgeons to prevent inadvertent injury during neck surgeries.