Table 2.
The chronological order of the ossification centers onset in the thoracic cage
| Ossification centers | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | IP (%) | Rank of ossification events |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thorax | |||||||||||||
| 1 st vertebral rib | x | 56.00% | 2 | ||||||||||
| 2 nd vertebral rib | x | 50.00% | 1 | ||||||||||
| Uncinate process | x | 50.00% | 1 | ||||||||||
| 3 rd vertebral rib | x | 50.00% | 1 | ||||||||||
| Uncinate process | x | 50.00% | 1 | ||||||||||
| 4 th vertebral rib | x | 50.00% | 1 | ||||||||||
| Uncinate process | x | 50.00% | 1 | ||||||||||
| 5 th vertebral rib | x | 50.00% | 1 | ||||||||||
| Uncinate process | x | 50.00% | 1 | ||||||||||
| 6 th vertebral rib | x | 50.00% | 1 | ||||||||||
| Uncinate process | x | 50.00% | 1 | ||||||||||
| 7 th vertebral rib | x | 50.00% | 1 | ||||||||||
| 1 st sternal rib | x | 68.00% | 4 | ||||||||||
| 2 nd sternal rib | x | 62.00% | 3 | ||||||||||
| 3 rd sternal rib | x | 62.00% | 3 | ||||||||||
| 4 th sternal rib | x | 62.00% | 3 | ||||||||||
| 5 th sternal rib | x | 68.00% | 4 | ||||||||||
| Sternum | |||||||||||||
| Craniolateral process | x | 88.00% | 6 | ||||||||||
| Caudolateral process | x | x | 81.00% | 5 | |||||||||
| Carina | x | 100% | 7 |
x: Ossification; and IP: Incubation period.