MORPHOMETRIC STUDY OF THYROID CARTILAGES IN ADULTS BY DISSECTION METHOD
International Journal of Anatomy and Research
Morphometrical evaluation of the larynx has always been interesting for both morphologists and the physicians. Accurate anatomic knowledge of laryngeal cartilage is essential in diagnostic and therapeutic procedures in the field of laryngology. Aim: To study morphometric features of thyroid cartilage in adult human cadavers and also to correlate the measurements of the thyroid cartilage between male and female. Materials and Methods: Thyroid cartilages from 62 cases (Male: 31, Female: 31) of
... , Female: 31) of postmortem in the department of Forensic medicine, MMC and RI, Mysore were studied. A total of seven parameters were measured on each thyroid cartilage and the observations were tabulated and compared between both sexes. Results: All parameters of Thyroid cartilage were more in males compared to females except thyroid angle which was more in females. The height of right thyroid lamina was equal to the height of left thyroid lamina in both males and females. Similarly the Antero-posterior distance of right thyroid lamina was equal to Anteroposterior distance of left thyroid lamina in both sexes. Conclusion: Considerable gender and race related differences in many of the geometric measurements of the thyroid cartilage were observed in the study. These morphological differences have important clinical and surgical implications. They are critical to the accurate placement of needles and probes in laryngeal electro myography and vocal cord injection, medialization procedures, in performing supraglottic laryngectomy, as well as precise planning of laryngeal framework surgery.