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Dual iliac screws in spinopelvic fixation: a systematic review
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Dual iliac screws in spinopelvic fixation: a systematic review
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Dual iliac screws in spinopelvic fixation: a systematic review
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Journal Article
Dual iliac screws in spinopelvic fixation: a systematic review
2019
Overview
PurposeThe classical spinopelvic fixation includes 1 iliac screw on each side. The purpose of this study is to specify the indications of the “dual iliac screw” (DIS) construct, i.e., when to put 2 iliac screws on each side, to describe its biomechanical advantages, and to define its related technical aspects.MethodsA primary search on Medline through PubMed distribution was performed, with the use of the terms “pelvic fixation” or “spinopelvic” or “lumbo-iliac” and the terms “dual iliac screw” or “double iliac screw.” English papers corresponding to the inclusion criteria were analyzed regarding the specific indications of the DIS construct and its surgical technique and advantages.ResultsEleven papers were identified according to the research criteria and included in this review. Three main indications were identified for the DIS technique according to three types of pathologies: in adult deformities when a long construct is needed in an osteoporotic patient or when correction requires three-column osteotomy of the sacrum; in trauma when a U-shaped fracture–dislocation of the sacrum is involved; in sacral tumors when a sacrectomy is performed or when destructive metastatic lesions of the sacrum require palliative surgical treatment. Biomechanically, the DIS technique proved to have higher construct stiffness in terms of compression and torsion.ConclusionIn specific cases, affecting different areas of spinal diseases, the DIS technique is more advantageous, when compared to the “single iliac screw” version, as it would provide a stronger and safer fixation at the base of the spinopelvic construct.Graphic abstractThese slides can be retrieved under Electronic Supplementary Material.
