Figure 3

The maximum sum displacement of the pelvic ring ( ${\mathit{U}}_{\mathbf{max}}^{\mathit{R}}$ ) and the maximum vertical displacement of the injured sacrum ( ${\mathit{Z}}_{\mathbf{max}}^{\mathit{S}}$ ), the maximum von Mises stress of internal fixator ( ${\mathit{\sigma }}_{\mathbf{max}}^{\mathit{F}}$ ) and the maximum von Mises stress of bony tissue of pelvic ring ( ${\mathit{\sigma }}_{\mathbf{max}}^{\mathit{B}}$ ) of two groups of surgical FE models (PTMP vs. SIJS) under compression states.