Risk Factors for the Drift Phenomenon in O‐arm Navigation‐Assisted Pedicle Screw Placement during Spinal Deformity Surgery

• DOI: 10.1111/os.13557
• Publication Date: 2022-11-17T05:39:33Z
• Authors: Jianquan Zhao; Heng Jiang; Yingjie Zhuge; Rui Gao; Ce Wang; Jun Ma; Xuhui Zhou
• Keywords: Vertebra; Spinal Deformity; Navigation System; Cobb angle

Intraoperative O-arm navigation systems improve the accuracy of spinal instrumentation placement. However, deviation pedicle screw from guide line might occur. The aim present study was to explore causes and countermeasures for drift phenomenon during implantation with aid an three-dimensional system in deformity surgery.This a retrospective analysis 341 patients who underwent system-assisted placement July 2015 June 2019. patient's general condition, Cobb angle, apical vertebra position, softness index, release status, fixed reference frame distance between vertebral body were collected compared by independent-samples t test or Pearson's chi-square analysis. potential risk factors identified using binary logistic regression analysis.The occurred 57 first navigation-assisted placement, incidence 16.7% (57/341). There significant differences such as when (P < 0.05). Binary showed that drifting independent placement.During use assist screws should not be placed away frame, osteotomy performed after In addition, will affected more those larger indices.