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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8414015 | PMC |
| http://dx.doi.org/10.7507/1002-1892.201711124 | DOI Listing |
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