Validation of a clinical test of thoracolumbar dissociation in chronic low back pain

Elgueta-Cancino, Edith, Schabrun, Siobhan, Danneels, Lieven, Van Den Hoorn, Wolbert and Hodges, Paul (2015) Validation of a clinical test of thoracolumbar dissociation in chronic low back pain. Journal of Orthopaedic and Sports Physical Therapy, 45 9: 703-712. doi:10.2519/jospt.2015.5590

Author Elgueta-Cancino, Edith
Schabrun, Siobhan
Danneels, Lieven
Van Den Hoorn, Wolbert
Hodges, Paul
Title Validation of a clinical test of thoracolumbar dissociation in chronic low back pain
Journal name Journal of Orthopaedic and Sports Physical Therapy   Check publisher's open access policy
ISSN 0190-6011
Publication date 2015-09-01
Year available 2015
Sub-type Article (original research)
DOI 10.2519/jospt.2015.5590
Open Access Status Not Open Access
Volume 45
Issue 9
Start page 703
End page 712
Total pages 10
Place of publication Alexandria, Virginia, United States
Publisher American Physical Therapy Association
Language eng
Formatted abstract
Study Design: Clinical test validation.

Objectives: Preliminary study of concurrent and discriminant validity of a clinical test of thoracolumbar dissociation.

Background: Control deficits of back muscles and trunk movement are common in chronic/recurrent low back pain (LBP). A reliable clinical test to rate an individual's ability to dissociate lumbopelvic movement from the thoracolumbar region has been described. This test rates the performance quality of 5 key aspects against criterion standards.

Methods: Concurrent validity was examined by comparison of clinical test scores (overall score and each individual criterion) against spine kinematics. Discriminant validity was evaluated by comparison of scores between pain-free controls and participants with LBP. A receiver operating characteristic curve was calculated to determine the optimal cutoff or score to differentiate between good and poor performers.

Results: Concurrent validity was supported by the significant correlation between the total score and motion of the T5 vertebra relative to the S1 vertebra (P<.05). Scores for some (4 correlations of 14 measures) but not all individual criteria were correlated with the kinematic features that each criterion was expected to reflect. Discriminant validity was supported by higher test scores for pain-free controls than for participants with LBP after 2 minutes of training (P = .045). Scores of less than 5.5 were more prevalent in the LBP group (pretraining LBP versus control, 72% versus 35%; P = .008; posttraining LBP versus control, 48% versus 16%; P = .018).

Conclusion: This preliminary study of concurrent and discriminant validity of the test provides a foundation to further investigate its utility to characterize thoracolumbar movement patterns in individuals with LBP.
Keyword Lumbar movements
Movement control
Spinal motion
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Health and Rehabilitation Sciences Publications
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