Quantitative comparison of a laterally misplaced pedicle screw with a re-directed screw. How much pull-out strength is lost?


KORKMAZ M., Sanyilmaz K., Ozkunt O., Gemalmaz H. C. , Akgul T., Sungur M., ...More

ACTA ORTHOPAEDICA ET TRAUMATOLOGICA TURCICA, vol.52, no.6, pp.459-463, 2018 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 6
  • Publication Date: 2018
  • Doi Number: 10.1016/j.aott.2018.03.002
  • Title of Journal : ACTA ORTHOPAEDICA ET TRAUMATOLOGICA TURCICA
  • Page Numbers: pp.459-463

Abstract

Objective: Redirecting of a laterally misplaced pedicle screw into the accurate position decreases the pull-out strength due to the reinsertion, lateral wall cortical perforation and widening of the pedicle hole. Thus, this biomechanical study was performed to quantitatively analyze the pullout strength of a redirected laterally misplaced pedicle screw into the accurate position.