However, at S1 level, the percentage of Grade 0 screws was found to be numerically lower in the L5-S Group (66.2%, 45/68) compared to that in the L5-NS Group (75.0%, 30/40), although the difference did not reach statistical significance ( P > 0.05).
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Does a deep seated L5 vertebra position with respect to the iliac crests affect the accuracy of percutaneous pedicle screw placement at lumbosacral junction?
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