S2-alar-iliac screws improve stability across the lumbosacral junction in spinopelvic fixation procedures by crossing the cortical surfaces of the sacroiliac joint, thereby increasing the biomechanical strength of the instrumentation
2020
Key concepts
Scholarcy highlights
- S2-alar-iliac screws improve stability across the lumbosacral junction in spinopelvic fixation procedures by crossing the cortical surfaces of the sacroiliac joint, thereby increasing the biomechanical strength of the instrumentation
- There were no significant differences in screw diameter, length, or insertion angle between right-side and left-side screws
- Set screw dislodgement occurred in 7 screws
- Screw fracture occurred in 6 screws: 5 neck fractures and 1 shaft fracture
- SIJ irritation symptoms after S2AI screw fixation occurred with considerable frequency
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