Table 2 Comparison of rod strain (Mean ± S.D. μE) for all constructs
Testing | Contour | Monoaxial screws | Polyaxial screws |
|---|---|---|---|
Compression | 0° | 893 ± 123 † | 172 ± 33† |
7° | 248 ± 23 * | 154 ± 20* | |
14° | 268 ± 52 # | 168 ± 25# | |
21° | 873 ± 170 ‡ | 161 ± 23‡ | |
Flexion | 0° | 595 ± 34 † | 256 ± 20† |
7° | 22.1 ± 4.8 * | 266 ± 12 * | |
14° | 46.0 ± 4.4 # | 203 ± 27# | |
21° | 633 ± 45 ‡ | 162 ± 15 ‡ | |
Lateral Bending | 0° | 540 ± 33† | 404 ± 4† |
7° | 258 ± 22* | 381 ± 10 * | |
14° | 273 ± 6 # | 430 ± 28 # | |
21° | 521 ± 16 ‡ | 407 ± 6‡ |