15 June 2020 : Clinical Research
Comparative Three-Dimensional Finite Element Analysis of 4 Kinds of Pedicle Screw Schemes for Treatment of Adult Degenerative Scoliosis
Yang Zhou1ABE, Daqi Xin2CD, Zhuoting Lei3C, Yuan Zuo4CD, Yan Zhao4EG*DOI: 10.12659/MSM.922050
Med Sci Monit 2020; 26:e922050
Table 6 Maximum force values of each vertebral body of the key vertebra screw system under 7 working conditions.
| Work condition | T12 | L1 | L2 | L3 | L4 | L5 |
|---|---|---|---|---|---|---|
| Upright | 11.697 | 10.045 | 22.131 | 4.3395 | 2.5735 | 10.438 |
| Forward flexion | 60.064 | 95.599 | 245.27 | 69.288 | 66.354 | 174.95 |
| Backward extension | 58.713 | 95.033 | 248.42 | 67.809 | 67.791 | 172.48 |
| Left lateral flexion | 79.086 | 54.608 | 120.39 | 60.528 | 32.616 | 112.1 |
| Right lateral flexion | 87.67 | 51.58 | 139.26 | 63.863 | 36.716 | 114.46 |
| Left axial rotation | 41.343 | 26.736 | 82.07 | 24.066 | 18.585 | 30.951 |
| Right axial rotation | 41.317 | 26.558 | 82.053 | 24.072 | 18.59 | 30.951 |
| L – lumbar vertebra; T – thoracic vertebra. | ||||||