Prevalence of Clinical Lumbar Instability in Patients with Chronic Low Back Pain by Radiography (Pilot Study)

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Arisa Leungbootnak
Rungthip Puntumetakul
Taweesak Janyacharoen
Wantana Siritaratiwat
Surachai Sae-jung


Background and Objective: Lumbar Instability (LI) could be classified into many subgroups which Clinical Lumbar Instability (CLI) was considered as affected on patients. CLI defined as the translation and rotation values of each lumbar segment greater than normal translation and rotation with clinical sign. CLI could result in patients in many aspects which had been reported. However, the evidence on reporting of lumbar instability have different methodology. The aimed of this study was to report CLI in patients with chronic low back pain by radiography.

Methods: This was a cross-sectional descriptive study in 50 chronic low back pain (CLBP) participants aged 33.7±13.3 years. Data were collected by interview for demographic data and flexion-extension radiograph for diagnosis instability. Descriptive statistics were used for calculation.

Results: This study found that the amount of CLI was 92%. Age of participants with CLI range from 20-59, which the participant aged 30 to 39 and 50 to 59 years showed 100% of CLI, aged 20 to 29 and 40 to 49 years showed 93.3% and 66.7%, respectively.

Conclusions: The finding of prevalence, age, and LBP period in this study demonstrated that CLI could be occurred in people who aged from 20 years onward. There were young patients with CLBP, the practitioner should aware of assessment about CLI in order to providing suitable management.


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