[Application of Second Sacral Alar-iliac Screw Technique for Reconstruction of Spinopelvic Stability]

Overview

Journal Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi

Specialty General Surgery

Date 2018 Jun 16

PMID 29905058

Authors

Nanwei Zhang

Binsheng Yu

Affiliations

Soon will be listed here.

Abstract

Objective: To summarize the current research progress of second sacral alar-iliac (S AI) screw technique for reconstruction of spinopelvic stability.

Methods: The recent original literature concerning development, clinical applications, anatomy, imageology, and biomechanics of S AI screw technique in reconstruction of spinopelvic stability was reviewed and analyzed.

Results: As a common clinical strategy for the reconstruction of spinopelvic stability, S AI screws achieve satisfactory effectiveness of lumbosacral fixation without complications which were found during the application of traditional iliac screws technique. S AI screw technique is more difficult to place screws by hand because of its narrow screw trajectory. Although the S AI screws trajectory pass through 3 layers of bone cortex, the biomechanical cadaveric study demonstrate that no statistical difference in stiffness was found between the traditional iliac and S AI screw in a spinopelvic fixation model.

Conclusion: S AI screw technique should be a safe and feasible method for reconstruction of spinopelvic stability in place of the traditional iliac screw technique.

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