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Observations reveal that the obturator inlet and iliac oblique views enhance safety in S2AI screw placement, indicating limitations of the inlet view.
The inlet view alone is inadequate for detecting anterior deviations, especially those located above the arcuate line of the pelvis. The OI and IO views demonstrated greater effectiveness in identifying deviations, thereby enhancing the accuracy and safety of S2AI screw placement.
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Okuwaki et al. (2025) studied this question.
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