Asian Spine J.  2018 Aug;12(4):749-753. 10.31616/asj.2018.12.4.749.

Is S1 Alar Iliac Screw a Feasible Option for Lumbosacral Fixation?: A Technical Note

Affiliations
  • 1Department of Orthopedic Surgery, Spine Unit, Centre Hopitalier de l’Université de Montréal, Montréal, Canada. amersebaaly@hotmail.com
  • 2Department of Neurosurgery, Spine Unit, Centre Hopitalier de l’Université de Montréal, Montréal, Canada.
  • 3Faculty of Medicine, Saint Joseph University, Beirut, Lebanon.

Abstract

Nonunion at the lumbosacral junction is a classic complication of long construct and deformity corrections. Iliac fixations have been extensively studied in the literature and have demonstrated superior biomechanical proprieties and lower complication rates. S2 alar iliac screws address the drawbacks of classical iliac screws but demonstrate similar biomechanical advantage. The main aim of this paper was to describe the S1 alar iliac (S1AI) screw fixation technique while evaluating our early results. S1AI screw fixation technique has the advantage of being able to achieve pelvic fixation without dissection to the S2 pedicle entry and is therefore a viable option for salvage of a failed S1 promontory screw.

Keyword

Lumbopelvic fixation; Pseudarthrosis; Lumbosacral region

MeSH Terms

Congenital Abnormalities
Lumbosacral Region
Pseudarthrosis
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