Variational Anatomy of Ansa Cervicalis and its Clinical Implications
Authors/Creators
- 1. 2nd Year Post Graduate, Dept of Anatomy, Rangaraya Medical College, Kakinada
- 2. Assistant Professor, Dept of Anatomy, Guntur Medical College, Guntur
- 3. Professor, Dept of Anatomy, Rangaraya Medical College, Kakinada
- 4. Professor & HOD, Dept of Anatomy, Government Medical College, Ananthapuramu
- 5. Professor & HOD, Dept of Anatomy, Rangaraya Medical College, Kakinada
Description
Background: Ansa cervacalis is a nerve loop which gives branches to innervate the infrahyoid group of muscles. Any injury to these muscles would cause disturbance in phonation. The Ansa cervicalis nerve loop is formed by superior root i.e arise from the cervical spinal nerves (C1-C2) inferior root is descending from C2-C3 .In the present study, We aim to document anatomical variations of Ansa cervicalis and can be important acknowledgment in specific surgeries of the neck region and its clinical implications. Materials & Methods: During routine dissection of adult cadavers of age 30-60 years old at department of anatomy, Rangaraya Medical College, Kakinada. while performing neck dissection, location and level of ansa cervicalis are observed in 25 cadavers on both sides of neck (50 hemineck dissections). Results: Among 50 hemineck dissections (In 25 cadavers ), 1 hemineck dissection on right side of neck showing abnormal location of ansa cervicalis i.e inside to the carotid sheath and in remaining 49 hemineck dissections ansa cervicalis is located on anterior aspect of carotid sheath intermediate level ansa seen in 40 hemineck dissections, low level ansa seen in 10 hemineck dissections but high level ansa not observed in any hemineck dissection. Conclusion: Knowledge regarding the location & level of ansa cervicalis is very useful to ENT Surgeons ,Head and neck surgeons, Onco surgeons to minimize the complications like paralysis of infrahyoid muscles while performing surgeries over the neck.
Abstract (English)
Background: Ansa cervacalis is a nerve loop which gives branches to innervate the infrahyoid group of muscles. Any injury to these muscles would cause disturbance in phonation. The Ansa cervicalis nerve loop is formed by superior root i.e arise from the cervical spinal nerves (C1-C2) inferior root is descending from C2-C3 .In the present study, We aim to document anatomical variations of Ansa cervicalis and can be important acknowledgment in specific surgeries of the neck region and its clinical implications. Materials & Methods: During routine dissection of adult cadavers of age 30-60 years old at department of anatomy, Rangaraya Medical College, Kakinada. while performing neck dissection, location and level of ansa cervicalis are observed in 25 cadavers on both sides of neck (50 hemineck dissections). Results: Among 50 hemineck dissections (In 25 cadavers ), 1 hemineck dissection on right side of neck showing abnormal location of ansa cervicalis i.e inside to the carotid sheath and in remaining 49 hemineck dissections ansa cervicalis is located on anterior aspect of carotid sheath intermediate level ansa seen in 40 hemineck dissections, low level ansa seen in 10 hemineck dissections but high level ansa not observed in any hemineck dissection. Conclusion: Knowledge regarding the location & level of ansa cervicalis is very useful to ENT Surgeons ,Head and neck surgeons, Onco surgeons to minimize the complications like paralysis of infrahyoid muscles while performing surgeries over the neck.
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IJTPR,Vol14,Issue5,Article6.pdf
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Additional details
Dates
- Accepted
-
2024-04-28
Software
References
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