Use of S2-Alar-Iliac Screws Associated with Less Complications than Iliac Screws in Adult Lumbosacropelvic Fixation

Benjamin D. Elder, Wataru Ishida, Sheng-fu Lo, Christina Holmes, C. R. Goodwin, Thomas A. Kosztowski, Ali Bydon, Ziya L. Gokaslan, Jean Paul Wolinsky, Daniel Sciubba, Timothy F Witham

Research output: Contribution to journalArticle


STUDY DESIGN.: Retrospective comparative study. OBJECTIVE.: To compare clinical and radiographic outcomes between the S2-alar-iliac (S2AI) and the iliac screw (IS) techniques in the adult population and clarify the clinical strength of S2AI screws. SUMMARY OF BACKGROUND DATA.: S2AI screws have been described as an alternative method for lumbosacropelvic fixation in place of ISs. The S2AI technique has several advantages with lower prominence, increased ability to directly connect to proximal instrumentation, less extensive dissection of tissue, and enhanced biomechanical strength over the IS technique. However, the clinical significance of these advantages remains unclear. METHODS.: A single-center retrospective review of patients who underwent lumbosacropelvic fixation yielded 25 IS group patients and 65 S2AI group patients. Baseline demographic information, postoperative complications, pain and functional outcomes, and screw-related outcomes were collected. RESULTS.: The S2AI group had lower rates of reoperation (8.8% versus 48.0%, p?

Original languageEnglish (US)
StateAccepted/In press - May 31 2016


ASJC Scopus subject areas

  • Clinical Neurology
  • Orthopedics and Sports Medicine

Cite this