Table 2 Thyroid cartilage measurements
Number | Variables | Measurement |
|---|---|---|
1 | АА OUTER | Outer distance between distal ends of superior horns |
2 | AA INNER | Inner distance between distal ends of superior horns |
3 | ВВ OUTER | Outer distance between bases of superior horns |
4 | ВВ INNER | Inner distance between bases of superior horns |
5 | СС OUTER | Outer distance between bases of inferior horns |
6 | СС INNER | Inner distance between bases of inferior horns |
7 | DD OUTER | Outer distance between distal ends of inferior horns |
8 | DD INNER | Inner distance between distal ends of inferior horns |
9 | AD DEX | Distance between distal ends of right superior and inferior horns |
10 | AD SIN | Distance between distal ends of left superior and inferior horns |
11 | AB DEX | Right superior horn length (distance between right superior horn distal end and base) |
12 | AB SIN | Left superior horn length (distance between left superior horn distal end and base) |
13 | CD DEX | Right inferior horn length (distance between right inferior horn distal end and base) |
14 | CD SIN | Left inferior horn length (distance between left inferior horn distal end and base) |
15 | BE DEX | Distance between superior point of the anterior intermedium line and base of right superior horn |
16 | BE SIN | Distance between superior point of the anterior intermedium line and base of left superior horn |
17 | CF DEX | Distance between inferior point of the anterior intermedium line and base of right superior horn |
18 | CF SIN | Distance between inferior point of the anterior intermedium line and base of left superior horn |
19 | EF | Distance between superior and inferior notches |
20 | GH DEX | Right lamina height (vertical line along right lamina middle) |
21 | GH SIN | Left lamina height (vertical line along left lamina middle) |
22 | KL | Horizontal distance between anterior intermedium line and the right lamina posterior edge |
23 | MN | Horizontal distance between anterior intermedium line and left lamina posterior edge |
24 | DEX thickness | Right lamina thickness along the mid-line |
25 | SIN thickness | Left lamina thickness along the mid-line |
26 | FP | Distance between inferior thyroid notch and line connecting left and right thyroid laminae |
27 | Q | Right superior horn thickness at mid-line |
28 | R | Left superior horn thickness at mid-line |
29 | S | Right inferior horn thickness at mid-line |
30 | T | Left inferior horn thickness at mid-line |
31 | α | Thyroid angle prior to cricothyroid joint dissection and thyroid cartilage separation from other laryngeal sections |