Literature review of finite element model studies of spinopelvic reconstructions following total sacrectomies and a comparison with the results of the present study.
| Vertical Displacement of L5, mm | Maximum von Mises Stress Values, MPa | Rigidity, Nm/mm | Area of Maximum Tension | |
| Modified Galveston reconstruction | 1042 (Kawahara)7 1042 (Murakami) 8 | Murakami 8: Area of the spinal rod spanning the L5 and iliac screws | ||
| Triangular frame reconstruction | 222 (Kawahara)7 229 (Murakami stainless steel)8 222 (Murakami titanium alloy)8 | Kawahara7 and Murakami 8: Point at which the sacral rod inserts into L5, between L5 and the iliac bone | ||
| Sacral rod reconstruction | 2.5 (Zhu)9 | 309 (Zhu)9 400 (Kawahara)7 | 123.6 (Zhu)9 | Zhu9: In the longitudinal or sacral rod proximal to the connection between screw and rod |
| Four-rod reconstruction | 7.2 (Zhu)9 | 324 (Zhu)9 | 45 (Zhu)9 | Zhu9: Middle part of the rods between the short and long iliac screws |
| Bilateral fibular flap reconstruction | 1.3 (Zhu)9 | 221 (Zhu)9 | 179 (Zhu)9 | Zhu9: In the longitudinal or sacral rod near the connection between the screws and the rods |
| Improved compound reconstruction | 0.70 (Zhu)9 | 108 (Zhu)9 222 (Kawahara)7 | 154.3 (Zhu)9 | Zhu9: In the longitudinal or sacral bar near the connection between the screws and rods |
| Model 1 | 5.08 | 1179 | 232.1 | In the rods that join L5 with the screws anchored in the pelvis |
| Model 2 | 5.15 | 1182 | 292.7 | In the rods that join L5 with the screws anchored in the pelvis |
| Model 3 | 1.69 | 787 | 465.7 | In the rods joining L5 with the screws anchored in the pelvis; tension values are also high in the cross-connecting elements |
| Model 4 | 1.7 | 786 | 462.7 | In the rods joining L5 with the screws anchored in the pelvis; tension values are also high in the cross-connecting elements |
| Model 5 | 0.13 | 112 | 861.5 | In the rods joining L5 with the screws anchored to the sacral prosthesis |
| Model 6 | 0.13 | 112 | 861.5 | In the rods that joining L5 with the screws anchored to the sacral prosthesis; values of up to 112 MPa |