Pelvic parameters directly influence ideal S2 alar-iliac (S2AI) screw trajectory.

ABSTRACT:

Background

The utilization of the S2 Alar-Iliac (S2AI) screw provides an optimal method of spinopelvic fixation. The free-hand placement of these screws obviates the use of intra-operative fluoroscopy and relies heavily on sacropelvic anatomy; variations of this anatomy could alter the ideal screw trajectory. The S2AI corridor is near several neurovascular structures, thus an accurate trajectory is critical. The reported angles of trajectory vary within the literature and a paucity of data exists on how patient morphometry influences ideal screw trajectory. We sought to examine the relationship between ideal screw trajectory and pelvic parameters.

Methods

The records of 99 consecutive patients with degenerative thoracolumbar pathology were reviewed and pelvic parameters incl

SUBMITTER: Vivace BJ 

PROVIDER: S-EPMC8819910 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature