Table 5 Stiffness and stress distribution of intact model and different postoperative fusion models
Model | Stiffness (N/mm) | Maximum Fusion Site Stress (MPa) | Maximum Internal Stress (MPa) |
|---|---|---|---|
Intact Model | 29.2 ± 2.1 | – | – |
PLF Model | 56.9 ± 5.2 | 136.8 ± 4.5 | 210.1 ± 8.3 |
PLIF Model | 63.3 ± 5.5 | 180.7 ± 3.7 | 83.3 ± 7.5 |
Modified articular fusion model | 53.1 ± 4.6 | 186.1 ± 3.1 | 194.8 ± 10.2 |