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Deep Spatial Discrimination in the Lumbar Spine
Clinic of Spinal Surgery, Strängnäs .
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Statistics.
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Statistics.
Clinic of Spinal Surgery, Strängnäs.
2016 (English)In: Journal of Neurology and Neuroscience, ISSN 2171-6625, Vol. 7, no 6, article id 160Article in journal (Refereed) Published
Abstract [en]

Background: In patients with chronic low back pain (CLBP)who undergo fusion surgery, selecting the level to fusehas been based on radiological findings, the pain reactionat discography, disc-block and temporal external fixation,tests all found to be unreliable. An alternative would be torely on spatialdiscrimination. Our objective was thereforeto test if healthy volunteers are able to discriminatebetween lumbar vertebrae bordering one another(adjacent) and those that are one or two vertebrae apart(separated).

Methods and findings: Eighteen volunteers participatedin the study. Short injection needles were introduced intothe top of the spinous processes of the L3, L4, L5 and S1vertebrae. One vertebra was tapped in the pair beingtested and immediately thereafter the other vertebra wastapped. The subject then had to decide whether the twotapped vertebrae were adjacent to one another orseparated. Outcome was measured as the number ofcorrectly specified pairs, out of the 12 alternatives,obtained for each test subject.

Results: For all 18 volunteers there were altogether 87correct classifications among the adjacent pairs ofvertebrae giving a mean of 0.805, 99% CI (0.69; 0.89)bootstrap. This was regarded as the sensitivity. In thesame manner the number of 96 correctly classifiedseparate pairs gives a specificity of 0.89, 99% CI (0.70;0.95) bootstrap.

Conclusion: We found our test useful in discriminatingdeep structures of the spine lying only 2-3 cm apart. Itmight therefore be useful when searching for a possiblypainful segment in patients with CLBP.

Place, publisher, year, edition, pages
2016. Vol. 7, no 6, article id 160
Keyword [en]
Spatial discrimination
National Category
Surgery
Identifiers
URN: urn:nbn:se:uu:diva-338239DOI: 10.21767/2171-6625.1000160OAI: oai:DiVA.org:uu-338239DiVA: diva2:1171816
Available from: 2018-01-08 Created: 2018-01-08 Last updated: 2018-02-09Bibliographically approved

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