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The distal fixation in thoracolumbar deformity surgery can be challenging for spine surgeons. When isolated S1-pedicle screws are utilized as the sole distal fixation in long thoracolumbar posterior constructs, there is a high rate of failure, due to loosening, breakage, and pseudarthrosis[2]. Unfortunately, with iliac screw fixation the entry point at the posterior superior iliac spine requires considerable soft tissue dissection and may potentially increase the likelihood of wound complications.[3]
S2-Alar-Iliac (S2AI) screw fixation technique was developed recently to provide increased fixation with a lower profile screwand rod construct[1]. This technique may provide advantages such as decreased rates of reoperation, surgical site infection,wound dehiscence and symptomatic screw prominence as compared to traditional iliac screw fixation.[3]
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Prominent conventional Iliac screws may lead to irritation and pain with high revision rate.[2,5]
MYSPINE IS DIFFERENT!
MySpine guided S2-Alar-Iliac trajectory may allow for a small incision and less lateral retraction, and the medial entry point allows for a quick rod connection, thus eliminating the need for additional connectors.[5]
The MySpine S2AI patient-specific drill guide might help facilitating complex thoracolumbar fixation with minimal radiation exposure and high accuracy.[3,4]
MySpine is a personalized surgical platform that is cost effective, efficient and intuitive. MySpine provides pre-op planning, single-use patient-specific drill guides and intra-operative surgical plan and navigation all designed by a dedicated engineer.
Low Dose CT scan to deliver 3D reconstructed vertebrae
The surgeon defines optimal implant parameters
Patient-matched Jigs are sent to the hospital
An experienced surgeon will support your first cases
[1] Sponseller P. et al., “Low Profile Pelvic Fixation With the Sacral Alar Iliac Technique in the Pediatric Population Improves Results at Two-Year Minimum Follow-up”, Spine, September 15, 2010
[2] Emami A. et al., “Outcome and Complications of Long Fusions to the Sacrum in Adult Spine Deformity: Luque-Galveston, Combined Iliac and Sacral Screws, and Sacral Fixation”, Spine, April 1, 2002
[3] Ai-Min Wu, et al. “The technique of S2-alar-iliac screw fixation: a literature review“. http://amj.amegroups.com/article/view/4197/4924
[4] Matsukawa K. et al., Cortical pedicle screw trajectory technique using 3D printed patient-specific-guide, M.O.R.E. Journal, September 2018
[5] Krieg S. et al., “Revision by S2-alar-iliac instrumentation reduces caudal screw loosening while improving sacroiliac joint pain—a group comparison”, Neurosurgical Review, September 2020 study
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