Table 4.

Maximum stress of the internal fixators in the models (MPa).

	Model 2	Model 3	Model 4	Model 5
Sacroiliac screw in standing position	118.16	90.307	78.629	44.656
Anterior ring fixation in standing position	66.384	50.736	49.898	77.93
Sacroiliac screw in sitting position	83.99	71.049	64.628	62.952
Anterior ring fixation in sitting position	3.035	4.0898	4.2333	16.102