• World Neurosurg · Sep 2018

    Accuracy of Screw Placement and Clinical Outcomes After O-Arm-Navigated Occipitocervical Fusion.

    • Linkai Jing, Zhenxing Sun, Peihai Zhang, James Wang, and Guihuai Wang.
    • School of Clinical Medicine, Tsinghua University, Beijing, China; Department of Neurosurgery, Beijing Tsinghua Changgung Hospital, Beijing, China.
    • World Neurosurg. 2018 Sep 1; 117: e653-e659.

    ObjectiveThis study aimed to evaluate the accuracy of screw placement and clinical outcomes in patients undergoing occipitocervical fusion.MethodsPatients who underwent occipitocervical fusion with O-arm-based navigation were retrospectively reviewed between January 2015 and December 2017. The patients' characteristics, clinical and radiographic outcomes, and surgical complications were recorded and analyzed. Cervical screw insertion accuracy was evaluated using the Richter scale.ResultsThirty consecutive patients (11 male and 19 female) with an average treatment age of 40.03 ± 15.19 years were studied. The most common cause was atlantoaxial instability combined with Chiari malformation (63.33%). Weakness (76.67%) and paresthesia (70.00%) were the most common symptoms. Eighty-six occipital and 139 cervical screws were placed using an O-arm-assisted navigation system. In total, 130 (93.53%) cervical screws were graded as group A and 9 (6.47%) as group B. The optimal accuracy rate was 88.41% (61 of 69 screws) in the first 15 patients and 98.57% (69 of 70 screws) in the subsequent 15 patients. The mean follow-up time was 7.50 ± 5.70 months. The mean Japanese Orthopedic Association scores were 13.30 ± 2.41 preoperatively and 15.30 ± 1.60 at final follow-up (P < 0.001), and the mean recovery rate in the Japanese Orthopedic Association score was 53.26 ± 33.82%. Clinical improvement was seen in 25 patients (83.33%), whereas no change was observed in 5 patients (16.67%). The overall complication rate was 6.67% (2/30), with 1 intraoperative vertebral artery injury and 1 postoperative screw loosening.ConclusionOccipitocervical fusion with O-arm-based navigation is effective and safe for treating instability of the craniovertebral junction. Intraoperative navigation can help surgeons insert screws accurately.Copyright © 2018 Elsevier Inc. All rights reserved.

      Pubmed     Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…