Feasibility of anterior pedicle screw fixation in lumbosacral spine: a radiographic and cadaveric study.

ABSTRACT:

Background

The anterior pedicle screw (APS) technique for L5 and S1 is crucial for proper anterior lumbar interbody fusion (ALIF). This study aimed to determine the projection, screw trajectory angle, and bone screw passageway length (BSPL), as well as the screw insertion regularity and the operating area within which it is safe to perform insertion.

Methods

Forty patients with low back pain, all of whom had lumbar computed tomography scans available, was included in this retrospective analysis. Radiographic parameters were measured, including: the distances from the projection to the upper endplate, lower endplate, and midline; the transverse and sagittal screw angles; and the BSPL. In addition, 10 fresh adult cadaveric lumbosacral spine segments were selected to determine

SUBMITTER: Xu WX 

PROVIDER: S-EPMC8267288 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature