Table 3.
Dynamic axial compression bending testing
| Memory Metal Spinal System | |||
|---|---|---|---|
|
Specimen |
Load (N) |
Cycles to failure (n) |
Failure mode |
| 1 |
198 |
5000000 |
No observed failure |
| 2 |
237 |
5000000 |
No observed failure |
| 3 |
237 |
5000000 |
No observed failure |
| 4 |
269 |
771901 |
Superior screws rotate inferiorly about superior transverse bridge |
| 5 |
296 |
500 |
Superior screws rotate inferiorly about superior transverse bridge |
| 6 |
355 |
250 |
Superior screws rotate inferiorly about superior transverse bridge |
|
MOSS Miami | |||
|
Specimen |
Load (N) |
Cycles to failure (n) |
Failure mode |
| 1 |
160 |
5000000 |
No observed failure |
| 2 |
170 |
5000000 |
No observed failure |
| 3 |
172 |
80000 |
Screw head/shank interface |
| 4 |
175 |
134537 |
Screw head/shank interface |
| 5 |
180 |
90811 |
Screw head/shank interface |
| 6 | 220 | 44251 | Screw head/shank interface |