Comparison of the One-Time Accuracy of Simulated Freehand and Navigation Simulated Pedicle Screw Insertion

To compare one-time accuracy rate between simulated freehand (SFH) and navigation simulated (NS) pedicle screw insertion, assuming no second chance to correct screws. A simulated, comparative, cross-sectional study was conducted on 69 patients undergoing lumbar spine surgery. An intraoperative regis...

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Veröffentlicht in:World neurosurgery 2019-08, Vol.128, p.e347-e354
Hauptverfasser: Xu, Yun-Feng, Zhang, Qi, Le, Xiao-Feng, Liu, Bo, He, Da, Sun, Yu-Qin, Liu, Ya-Jun, Yuan, Qiang, Lang, Zhao, Han, Xiao-Guang, Tian, Wei
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container_end_page e354
container_issue
container_start_page e347
container_title World neurosurgery
container_volume 128
creator Xu, Yun-Feng
Zhang, Qi
Le, Xiao-Feng
Liu, Bo
He, Da
Sun, Yu-Qin
Liu, Ya-Jun
Yuan, Qiang
Lang, Zhao
Han, Xiao-Guang
Tian, Wei
description To compare one-time accuracy rate between simulated freehand (SFH) and navigation simulated (NS) pedicle screw insertion, assuming no second chance to correct screws. A simulated, comparative, cross-sectional study was conducted on 69 patients undergoing lumbar spine surgery. An intraoperative registration system captured the planned point of entry and trajectory of pedicle screws for both SFH under direct visualization and NS under navigation-aided visualization. Pedicle screw insertion was simulated for each captured image (370 screws) using Surgimap. Rajasekaran's method helped evaluate the point of entry accuracy and trajectory. Accuracy rate was better for the NS method (97.8%) than for the SFH method (63.8%). Of 370 screws in the SFH group, 134 penetrated the cortex, with 31 resulting in >4 mm penetration. Of 370 screws in the NS group, 8 penetrated the cortex,
doi_str_mv 10.1016/j.wneu.2019.04.151
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A simulated, comparative, cross-sectional study was conducted on 69 patients undergoing lumbar spine surgery. An intraoperative registration system captured the planned point of entry and trajectory of pedicle screws for both SFH under direct visualization and NS under navigation-aided visualization. Pedicle screw insertion was simulated for each captured image (370 screws) using Surgimap. Rajasekaran's method helped evaluate the point of entry accuracy and trajectory. Accuracy rate was better for the NS method (97.8%) than for the SFH method (63.8%). Of 370 screws in the SFH group, 134 penetrated the cortex, with 31 resulting in &gt;4 mm penetration. Of 370 screws in the NS group, 8 penetrated the cortex, &lt;4 mm penetration. Of 134 misplaced screws in the SFH group, 64 were due to error in the point of entry, 63 were due to error in the trajectory angle, and 7 were due to both errors. Of 8 errors in the NS group, 7 were due to the point of entry. Intraoperative navigation had significantly better one-time accuracy of pedicle screw insertion than freehand insertion and should be used to avoid injury to the pedicle and surrounding tissue from screw reinsertion.</description><identifier>ISSN: 1878-8750</identifier><identifier>EISSN: 1878-8769</identifier><identifier>DOI: 10.1016/j.wneu.2019.04.151</identifier><identifier>PMID: 31029816</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Aged ; Computer Simulation ; Cross-Sectional Studies ; Female ; Humans ; Imaging, Three-Dimensional ; Intervertebral Disc Displacement - surgery ; Intraoperative screw adjustment ; Lumbar Vertebrae - surgery ; Male ; Middle Aged ; Navigation simulated ; Neuronavigation - methods ; Neurosurgical Procedures - methods ; One-time accuracy ; Pedicle screw placement ; Pedicle Screws ; Reoperation ; Simulated freehand ; Spinal Stenosis - surgery ; Spondylolisthesis - surgery</subject><ispartof>World neurosurgery, 2019-08, Vol.128, p.e347-e354</ispartof><rights>2019 Elsevier Inc.</rights><rights>Copyright © 2019 Elsevier Inc. 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A simulated, comparative, cross-sectional study was conducted on 69 patients undergoing lumbar spine surgery. An intraoperative registration system captured the planned point of entry and trajectory of pedicle screws for both SFH under direct visualization and NS under navigation-aided visualization. Pedicle screw insertion was simulated for each captured image (370 screws) using Surgimap. Rajasekaran's method helped evaluate the point of entry accuracy and trajectory. Accuracy rate was better for the NS method (97.8%) than for the SFH method (63.8%). Of 370 screws in the SFH group, 134 penetrated the cortex, with 31 resulting in &gt;4 mm penetration. Of 370 screws in the NS group, 8 penetrated the cortex, &lt;4 mm penetration. Of 134 misplaced screws in the SFH group, 64 were due to error in the point of entry, 63 were due to error in the trajectory angle, and 7 were due to both errors. Of 8 errors in the NS group, 7 were due to the point of entry. 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subjects Aged
Computer Simulation
Cross-Sectional Studies
Female
Humans
Imaging, Three-Dimensional
Intervertebral Disc Displacement - surgery
Intraoperative screw adjustment
Lumbar Vertebrae - surgery
Male
Middle Aged
Navigation simulated
Neuronavigation - methods
Neurosurgical Procedures - methods
One-time accuracy
Pedicle screw placement
Pedicle Screws
Reoperation
Simulated freehand
Spinal Stenosis - surgery
Spondylolisthesis - surgery
title Comparison of the One-Time Accuracy of Simulated Freehand and Navigation Simulated Pedicle Screw Insertion
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