Table 1 Screw pullout strength (numbers in Newton) for every screw type in each vertebral body in the three spine specimens tested
Vertebral level | Spine specimen 1 64y, male BMD = 0,774 g/cm2 | Spine Specimen 2 60y, female BMD = 0,649 g/cm2 | Spine Specimen 3 70y, male BMD = 0,762 g/cm2 | |||
|---|---|---|---|---|---|---|
Left pedicle | Right pedicle | Left pedicle | Right pedicle | Left pedicle | Right pedicle | |
T10 | 1710 (FSP) | 1073 (DOD) | R | R | R | R |
T11 | 947 (FS) | 868 (SS) | 326 (SS) | 521 (FS) | 582 (SS) | 873 (FS) |
T12 | 1628 (FSP) | 785 (DOD) | 927 (DOD) | 1098 (FSP) | 989 (SS) | 762 (FS) |
L1 | 727 (FS) | 858 (SS) | 763 (SS) | 345 (FS) | 1509 (FSP) | 620 (DOD) |
L2 | 1588 (FSP) | 1067 (DOD) | 623 (DOD) | 1225 (FSP) | 560 (FS) | 435 (SS) |
L3 | 605 (FS) | 704 (SS) | 274 (SS) | 302 (FS) | 898 (DOD) | 1555 (FSP) |
L4 | 1199 (FSP) | 800 (DOD) | 430 (DOD) | 1499 (FSP) | 1245 (DOD) | 1692 (FSP) |
L5 | R | R | 301 (SS) | 265 (FS) | R | R |