IJAR.2020.210
Type of Article: Original Research
Volume 8; Issue 4.1 (November 2020)
Page No.: 7761-7766
DOI: https://dx.doi.org/10.16965/ijar.2020.210
COMPARISION BETWEEN DISSECTION AND CT MEASUREMENTS OF THYROID AND CRICOID CARTILAGES IN ADULTS
Savitha V 1, Sharada B. Menasinkai *2.
1 Assistant Professor, Department of Anatomy, Adichunchanagiri Institute of Medical Sciences affiliated to Adichunchanagiri University, B.G Nagara, Karnataka, India.
*2 Professor & Head, Department of Anatomy, Adichunchanagiri Institute of Medical Sciences affiliated to Adichunchanagiri University, B.G Nagara, Karnataka, India.
Corresponding Author: Dr. Sharada B. Menasinkai, Professor & Head, Department of Anatomy, Adichunchanagiri Institute of Medical Sciences affiliated to Adichunchanagiri University, B.G Nagara-571448 Karnataka, India. Mobile No:9945614794. E-Mail: drsharadabm@gmail.com
ABSTRACT
Background: The increasing application of sophisticated electro-physiological & radiological methods for the diagnosis and treatment of laryngeal disorders requires an extensive knowledge of the size and proportions of the human larynx & its cartilaginous components.
Aims: To study the various morphometric measurements of the Thyroid & Cricoid cartilages in male & female in dissection & CT method and to compare the measurements of Thyroid & Cricoid cartilages between living (CT measurements) & Cadaver (dissected specimens).
Materials and Methods: The present study was carried on 62 (31 Male, 31 Female) patients undergoing CT neck attending the Department of Radiology, K.R Hospital attached to Mysore Medical College & Research Institute, Mysore, Karnataka, India. In the Computerized Tomography of Neck, measurements of Thyroid & Cricoid cartilages were taken at two levels by using Radiant Dicom Viewer software. Thyroid and Cricoid cartilages from 62 cases (Male: 31, Female: 31) of postmortem in the department of Forensic medicine, MMC and RI, Mysore were studied. Various parameters on thyroid and cricoid were measured using vernier caliper.
Results: The results by two methods showed significant differences after death i.e. by dissection method the AP measurements of both thyroid & cricoid cartilages are less compared to AP measurements of both cartilages by CT method in both sexes i.e. in living.
Conclusion: We can conclude that there is a decrease in AP distance of both thyroid & Cricoid cartilages in both the sexes after death. These morphological differences have important clinical and surgical implications.
Key words: Larynx, Thyroid Cartilage, Cricoid Cartilage, Morphometry, Sex determination.
REFERENCES
[1]. Standring S. Larynx. In: Barry K B Berkovitz (editors). Gray’s Anatomy. 40th Edition. London:Elsevier Charchill Livingstone: 2006. The anatomical basis of clinical practice; pp. 577-593.
[2]. Kutta H, Knipping S, Claassen H and Paulsen F. Functional anatomy of the larynx from clinical viewpoints. Part I: development, laryngeal skeleton, joints, insertion structures, musculature. HNO: 2007; 55(7): 583-98.
https://doi.org/10.1007/s00106-007-1556-2
PMid:17431565
[3]. Randestad A, Lindholm CE and Fabian P. Dimensions of the cricoid cartilage and the trachea.The Laryngoscope: 2000; 110: 1957-61.
https://doi.org/10.1097/00005537-200011000-00036
PMid:11081618
[4]. Ajmani ML. A metrical study of the laryngeal skeleton in adult Nigerian. J Anat: 1990;171: pp.187-191.
[5]. Eckel HE, Sittel C, Zorowka P, Jerke A. Dimensions of the laryngeal framework in adults. Surg Radiol Anat :1994;16:pp.31-36.
https://doi.org/10.1007/BF01627918
PMid:8047966
[6]. Jain M, Dhall U. Morphometry of the thyroid and cricoid cartilages in Adults. J Anatomical Society of India: 2008; 57(2):pp.119-123.
[7]. Hajiioannou JK, Florou V and Kousoulis P (2010). Superior thyroid cornu anatomical variation causing globus Pharyngeous and dysphagia [serial online].
https://doi.org/10.1155/2010/142928
PMid:21113296 PMCid:PMC2989381
[8]. Krichner JC, Krichner JA and Sasaki CT. Anatomic foramina in the thyroid cartilage:incidence and implications for the spread of laryngeal cancer. Annals of Otology Rhinology Laryngology: 1989; 98(6): 421-425.
https://doi.org/10.1177/000348948909800604
PMid:2729824
[9]. Jackson C and Jackson CL. Malignant disease of larynx: its treatment by laryngofissure and laryngectomy. American Journal of Surgery: 1935; 30-33.
https://doi.org/10.1016/S0002-9610(35)90043-5
[10]. Monika Jain, Usha Dhall. Morphometry of the Thyroid and cricoid cartilages in Adults on CT scan. J Anatomical society of India: 2010; 59 (1):pp.19- 23.
https://doi.org/10.1016/S0003-2778(10)80005-X
[11]. Lipton RJ, McCaffrey TV, Cahill DR. Sectional anatomy of the Larynx: Implication for the transcutaneous approach to endolaryngeal structures. Ann Otol Rhinol Laryngol 1989; 98:141-44.
https://doi.org/10.1177/000348948909800211
PMid:2916825
[12]. Harrison GA, Tonkin JP. Prolonged (therapeutic) endotracheal intubation. BR J Anaesth 1968;40:241-249.
https://doi.org/10.1093/bja/40.4.241
PMid:5654975
[13]. Dr. Savitha V, Dr. Sharada B. Menasinkai, Morphometric study of Thyroid cartilages in adults by Dissection method – International journal of anatomy and Research -2019, Vol 7(3.2):6824-6829.
https://doi.org/10.16965/ijar.2019.235
[14]. Dr. Savitha V, Dr. Sharada B. Menasinkai, Morphometric Study of Cricoid Cartilages in Adults by Dissection Method. Scholars International Journal of Anatomy and Physiology 2020; 3(3): 24-27.
https://doi.org/10.36348/sijap.2020.v03i03.001
[15]. Dr. Savitha V, Dr. Sharada B. Menasinkai, Morphometric study of Thyroid and Cricoid cartilages in adults by CT method. Indian Journal of Anatomy 2020; 9(2): 118-122.
https://doi.org/10.21088/ija.2320.0022.9220.3
