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A comparison of MRI and intraoperative measurements to determine interspinous spacer device size.

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Title: A comparison of MRI and intraoperative measurements to determine interspinous spacer device size.
Authors: Nelson, Charles, Liao, Chuanhong, Malik, Tariq
Source: Pain Practice. Feb2025, Vol. 25 Issue 2, p1-9. 9p.
Subjects: Lumbar vertebrae surgery, Preoperative period, Prosthetics, Magnetic resonance imaging, Artificial implants, Retrospective studies, Spinal stenosis, Intraoperative monitoring, Medical records, Acquisition of data, Anthropometry, Comparative studies, Evaluation
Geographic Terms: Illinois
Abstract: Purpose: To determine whether preoperative magnetic resonance imaging (MRI) can reliably determine intraoperative measurements in the Vertiflex Interspinous Spacer (ISS) procedure. Methods: Patients who underwent Vertiflex ISS with Lumbar Spinal Stenosis (LSS) and a preoperative MRI available in picture archiving and communication system (PACS) between January 2013 to February 2023 were identified retrospectively from the University of Chicago Medical Center Database. An experienced board‐certified pain specialist and well‐trained 2nd‐year medical student independently performed measurements of the interspinous space where Vertiflex ISSs of various sizes are inserted. MRI measurements were taken blinded to intraoperative measurement and ISS implant size used in the procedure. Pearson's correlation, paired T‐test, intraclass correlation coefficients (ICC), absolute agreement, and 2‐way random effects model were used to determine the relationships between MRI, intraoperative measurement, and ISS size. Results: A total of 79 patients who underwent the Vertiflex ISS procedure were included in the study. Median Vertiflex ISS size was 10 mm (10–12), mean intraoperative measurement was 11.40 mm (±1.23), and mean MRI measurement was 11.24 mm (±1.44). Mean differences were not significant in intraoperative and MRI measurements (p = 0.271). Pearson's correlation between ISS size and intraoperative measurement was 0.807 (p < 0.001), representing the current best practice model. Pearson's correlation was 0.668 (p < 0.001) between MRI measurement and ISS size and 0.542 (p < 0.001) between MRI and intraoperative measurement. ICC showed good agreement and moderate reliability (0.698) between intraoperative and MRI measurements. Observer interrater ICC agreement of the MRI interspinous space measurement was 0.95 (p < 0.001). Conclusions: Measuring interspinous space on MRI yielded, on average, a value smaller than the intraoperative measurement in Vertiflex ISS procedures, but the mean differences were not significant. Good agreement and moderate reliability were found between observer MRI and surgeon intraoperative measurements, suggesting MRI can evaluate the intraoperative space for the Vertiflex ISS procedure. Preoperative MRI measurement may help decrease complications by aiding in surgical decision‐making through providing a reference for intraoperative measurements. Further prospective study is necessary to determine if preoperative MRI measurement can predict and potentially replace the need for intraoperative measurement. [ABSTRACT FROM AUTHOR]
Copyright of Pain Practice is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: A comparison of MRI and intraoperative measurements to determine interspinous spacer device size.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Nelson%2C+Charles%22&quot;&gt;Nelson, Charles&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Liao%2C+Chuanhong%22&quot;&gt;Liao, Chuanhong&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Malik%2C+Tariq%22&quot;&gt;Malik, Tariq&lt;/searchLink&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Pain+Practice%22&quot;&gt;Pain Practice&lt;/searchLink&gt;. Feb2025, Vol. 25 Issue 2, p1-9. 9p.
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  Label: Abstract
  Group: Ab
  Data: Purpose: To determine whether preoperative magnetic resonance imaging (MRI) can reliably determine intraoperative measurements in the Vertiflex Interspinous Spacer (ISS) procedure. Methods: Patients who underwent Vertiflex ISS with Lumbar Spinal Stenosis (LSS) and a preoperative MRI available in picture archiving and communication system (PACS) between January 2013 to February 2023 were identified retrospectively from the University of Chicago Medical Center Database. An experienced board‐certified pain specialist and well‐trained 2nd‐year medical student independently performed measurements of the interspinous space where Vertiflex ISSs of various sizes are inserted. MRI measurements were taken blinded to intraoperative measurement and ISS implant size used in the procedure. Pearson&#39;s correlation, paired T‐test, intraclass correlation coefficients (ICC), absolute agreement, and 2‐way random effects model were used to determine the relationships between MRI, intraoperative measurement, and ISS size. Results: A total of 79 patients who underwent the Vertiflex ISS procedure were included in the study. Median Vertiflex ISS size was 10 mm (10–12), mean intraoperative measurement was 11.40 mm (&#177;1.23), and mean MRI measurement was 11.24 mm (&#177;1.44). Mean differences were not significant in intraoperative and MRI measurements (p = 0.271). Pearson&#39;s correlation between ISS size and intraoperative measurement was 0.807 (p &lt; 0.001), representing the current best practice model. Pearson&#39;s correlation was 0.668 (p &lt; 0.001) between MRI measurement and ISS size and 0.542 (p &lt; 0.001) between MRI and intraoperative measurement. ICC showed good agreement and moderate reliability (0.698) between intraoperative and MRI measurements. Observer interrater ICC agreement of the MRI interspinous space measurement was 0.95 (p &lt; 0.001). Conclusions: Measuring interspinous space on MRI yielded, on average, a value smaller than the intraoperative measurement in Vertiflex ISS procedures, but the mean differences were not significant. Good agreement and moderate reliability were found between observer MRI and surgeon intraoperative measurements, suggesting MRI can evaluate the intraoperative space for the Vertiflex ISS procedure. Preoperative MRI measurement may help decrease complications by aiding in surgical decision‐making through providing a reference for intraoperative measurements. Further prospective study is necessary to determine if preoperative MRI measurement can predict and potentially replace the need for intraoperative measurement. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Pain Practice is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=183926024
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1111/papr.70001
    Languages:
      – Code: eng
        Text: English
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        PageCount: 9
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    Subjects:
      – SubjectFull: Lumbar vertebrae surgery
        Type: general
      – SubjectFull: Preoperative period
        Type: general
      – SubjectFull: Prosthetics
        Type: general
      – SubjectFull: Magnetic resonance imaging
        Type: general
      – SubjectFull: Artificial implants
        Type: general
      – SubjectFull: Retrospective studies
        Type: general
      – SubjectFull: Spinal stenosis
        Type: general
      – SubjectFull: Intraoperative monitoring
        Type: general
      – SubjectFull: Medical records
        Type: general
      – SubjectFull: Acquisition of data
        Type: general
      – SubjectFull: Anthropometry
        Type: general
      – SubjectFull: Comparative studies
        Type: general
      – SubjectFull: Evaluation
        Type: general
      – SubjectFull: Illinois
        Type: general
    Titles:
      – TitleFull: A comparison of MRI and intraoperative measurements to determine interspinous spacer device size.
        Type: main
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            NameFull: Nelson, Charles
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            NameFull: Liao, Chuanhong
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            NameFull: Malik, Tariq
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            – D: 01
              M: 02
              Text: Feb2025
              Type: published
              Y: 2025
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              Value: 25
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            – TitleFull: Pain Practice
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