Intra- and inter-observer reliability of determining radiographic sagittal parameters of the spine and pelvis using a manual and a computer-assisted methods.
Sagittal imbalance is a significant factor in determining clinical treatment outcomes in patients with deformity. Measurement of sagittal alignment using the traditional Cobb technique is frequently hampered by difficulty in visualizing landmarks. This report compares traditional manual measurement...
| Published in: | European Spine Journal Vol. 17; no. 10; pp. 1373 - 1380 |
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| Main Authors: | , , , , , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Oct2008
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105572212&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105572212 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09406719 NPI jtl: European Spine Journal issn: 09406719 maglogo: N pubinfo: dt: Oct2008 vid: 17 iid: 10 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105572212 NLM18726124 2010097665 10.1007/s00586-008-0755-1 NLM18726124 PMC2556466 105572212 ppf: 1373 ppct: 7 formats: tig: atl: Intra- and inter-observer reliability of determining radiographic sagittal parameters of the spine and pelvis using a manual and a computer-assisted methods. aug: au: Dimar JR 2nd Carreon LY Labelle H Djurasovic M Weidenbaum M Brown C Roussouly P Dimar, John R 2nd Carreon, Leah Y Labelle, Hubert Djurasovic, Mladen Weidenbaum, Mark Brown, Courtney Roussouly, Pierre affil: Leatherman Spine Center, 210 East Gray Street, Suite 900, Louisville, KY 40202, USA sug: subj: Pelvis Radiography Radiographic Image Interpretation, Computer-Assisted Methods Spinal Curvatures Radiography Spine Radiography Adult Observer Bias Reproducibility of Results Human Adult: 19-44 years ab: Sagittal imbalance is a significant factor in determining clinical treatment outcomes in patients with deformity. Measurement of sagittal alignment using the traditional Cobb technique is frequently hampered by difficulty in visualizing landmarks. This report compares traditional manual measurement techniques to a computer-assisted sagittal plane measurement program which uses a radius arc methodology. The intra and inter-observer reliability of the computer program has been shown to be 0.92-0.99. Twenty-nine lateral 90 cm radiographs were measured by a computer program for an array of sagittal plane measurements. Ten experienced orthopedic spine surgeons manually measured the same parameters twice, at least 48 h apart, using a digital caliper and a standardized radiographic manual. Intraclass correlations were used to determine intra- and interobserver reliability between different manual measures and between manual measures and computer assisted-measures. The inter-observer reliability between manual measures was poor, ranging from -0.02 to 0.64 for the different sagittal measures. The intra-observer reliability in manual measures was better ranging from 0.40 to 0.93. Comparing manual to computer-assisted measures, the ICC ranged from 0.07 to 0.75. Surgeons agreed more often with each other than with the machine when measuring the lumbar curve, the thoracic curve, and the spino-sacral angle. The reliability of the computer program is significantly higher for all measures except for lumbar lordosis. A computer-assisted program produces a reliable measurement of the sagittal profile of the spine by eliminating the need for distinctly visible endplates. The use of a radial arc methodology allows for infinite data points to be used along the spine to determine sagittal measurements. The integration of this technique with digital radiography's ability to adjust image contrast and brightness will enable the superior identification of key anatomical parameters normally not available for measurement on traditional radiographs, improving the consistency of sagittal measurement. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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