Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Level | Number of screws | Misplaced | % |
|---|---|---|---|
| T2 | 3 | 0 | 0 |
| T3 | 4 | 2 | 50 |
| T4 | 2 | 0 | 0 |
| T5 | 6 | 1 | 16.67 |
| T6 | 6 | 2 | 33.3 |
| T7 | 1 | 1 | 100 |
| T9 | 4 | 1 | 25 |
| T10 | 14 | 3 | 21.43 |
| T11 | 19 | 1 | 5.26 |
| T12 | 16 | 0 | 0 |
| L1 | 22 | 1 | 4.55 |
| L2 | 30 | 2 | 6.67 |
| L3 | 62 | 2 | 3.23 |
| L4 | 146 | 4 | 2.74 |
| L5 | 181 | 3 | 1.66 |
| S1 | 98 | 2 | 2.04 |
| Thoracic | 75 | 11 | 14.67 |
| Lumbar | 539 | 14 | 2.60 |
| Total | 614 | 25 | 4.07 |
