Precision of lumbar intervertebral measurements: does a computer-assisted technique improve reliability?
Study Design: Comparison of intra- and interobserver reliability of digitized manual and computer-assisted intervertebral motion measurements and classification of "instability." Objective: To determine if computer-assisted measurement of lumbar intervertebral motion on flexion-extension radiographs...
| Publicado en: | Spine (03622436) Vol. 36; no. 7; pp. 572 - 581 |
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| Autores principales: | , , , , , , , , , , , , , |
| Formato: | clinical trial research Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
2011 Apr 1
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=108189727&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 108189727 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03622436 1Y6 jtl: Spine (03622436) issn: 03622436 maglogo: N pubinfo: dt: 2011 Apr 1 vid: 36 iid: 7 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 108189727 108189727 NLM21217439 2010989288 10.1097/BRS.0b013e3181e11c13 NLM21217439 108189727 ppf: 572 ppct: 9 formats: tig: atl: Precision of lumbar intervertebral measurements: does a computer-assisted technique improve reliability? aug: au: Pearson AM Spratt KF Genuario J McGough W Kosman K Lurie J Sengupta DK Pearson, Adam M Spratt, Kevin F Genuario, James McGough, William Kosman, Katherine Lurie, Jon Sengupta, Dilip K affil: Department of Orthopaedic Surgery, Dartmouth-Hitchcock Metical Center, Lebanon, NH 03756, USA sug: subj: Lumbar Vertebrae Radiography Radiographic Image Interpretation, Computer-Assisted Standards Aged Female Human Male Radiographic Image Interpretation, Computer-Assisted Methods Reproducibility of Results Clinical Trials Aged: 65+ years Female Male ab: Study Design: Comparison of intra- and interobserver reliability of digitized manual and computer-assisted intervertebral motion measurements and classification of "instability." Objective: To determine if computer-assisted measurement of lumbar intervertebral motion on flexion-extension radiographs improves reliability compared with digitized manual measurements. Summary Of Background Data: Many studies have questioned the reliability of manual intervertebral measurements, although few have compared the reliability of computer-assisted and manual measurements on lumbar flexion-extension radiographs. Methods: Intervertebral rotation, anterior-posterior (AP) translation, and change in anterior and posterior disc height were measured with a digitized manual technique by three physicians and by three other observers using computer-assisted quantitative motion analysis (QMA) software. Each observer measured 30 sets of digital flexion-extension radiographs (L1-S1) twice. Shrout-Fleiss intraclass correlation coefficients for intra- and interobserver reliabilities were computed. The stability of each level was also classified (instability defined as >4 mm AP translation or 10° rotation), and the intra- and interobserver reliabilities of the two methods were compared using adjusted percent agreement (APA). Results: Intraobserver reliability intraclass correlation coefficients were substantially higher for the QMA technique THAN the digitized manual technique across all measurements: rotation 0.997 versus 0.870, AP translation 0.959 versus 0.557, change in anterior disc height 0.962 versus 0.770, and change in posterior disc height 0.951 versus 0.283. The same pattern was observed for interobserver reliability (rotation 0.962 vs. 0.693, AP translation 0.862 vs. 0.151, change in anterior disc height 0.862 vs. 0.373, and change in posterior disc height 0.730 vs. 0.300). The QMA technique was also more reliable for the classification of "instability." Intraobserver APAs ranged from 87 to 97% for QMA versus 60% to 73% for digitized manual measurements, while interobserver APAs ranged from 91% to 96% for QMA versus 57% to 63% for digitized manual measurements. Conclusion: The use of QMA software substantially improved the reliability of lumbar intervertebral measurements and the classification of instability based on flexion-extension radiographs. pubtype: Academic Journal doctype: clinical trial research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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