Conclusions PTSF method is the most rigid way of sacral fixation,anterointerior sacral promontory method is the second,and anterolateral sacral wing method is the worst.
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- 结论PTSF法骶骨螺钉的抗拨出力和摆动力矩最大,固定最坚强,前内骶岬方向骶骨螺钉次之,前外骶翼方向骶骨螺钉固定最差。