====== S2 alar-iliac screw ======

The S2 alar-iliac (S2AI) [[screw]] is a modification of the traditional iliac fixation technique using the space between the neural foramina of S1 and S2 as an insertion point to fix the [[sacrum]] to the [[ilium]].

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Traumatic [[sacral spondyloptosis]] adds a degree of difficulty to reduction, fixation, and fusion. The technique presented herein achieved sagittal realignment via a distraction maneuver of S1-2 in which rods were attached to bilateral dual [[S2 alar-iliac screw]]s with reduction screws placed at S1, ultimately pulling L5 and S1 up to the rod for fixation
((Tracz JA, Judy BF, Sacino AN, Bydon A, Witham TF. Management of traumatic sacral spondyloptosis: illustrative case. J Neurosurg Case Lessons. 2022 Jul 18;4(3):CASE22221. doi: 10.3171/CASE22221. PMID: 36046707; PMCID: PMC9301347.)).