| Variety of position | Size | Percentage |
| anterior left occipito-iliac | 60 | 63.8 |
| anterior right occipito-iliac | 25 | 26.5 |
| posterior right occipito-iliac | 05 | 5.3 |
| posterior left occipito-iliac | 04 | 4.2 |
| TOTAL | 94 | 100 |