Comparison of Lumbo-Pelvic stability between patients with chronic low back pain and healthy subjects

Because of the importance of lumbo-pelvic stability as one of the suggested factors to prevent low back pain and since to date no study accomplished to compare lumbo-pelvic stability between chronic low back pain (CLBP) and healthy subjects, the aim of this study was to determine and to compare lumbo-pelvic stability, lumbar lordosis, and lumbar mobility between CLBP and healthy subjects. Thirty CLBP patients and thirty healthy subjects through simple non-probability sampling participated in this cross-sectional analytical study. Lumbar lordosis, lumbar flexion and extension range of motion, lumbo-pelvic stability was measured through flexible ruler, modifiedmodified schober test, and Pressure Biofeedback Unit (PBU) respectively. ANCOVA test were used for statistical analysis (p<0.05). The results showed that mean of amounts obtained from pressure biofeedback unit did not significantly differ between two group (p>0.05). Also lumbar lordosis, and lumbar flexion and extension range of motion did not significantly differ between two groups (p>0.05). There is no difference between CLBP and healthy subjects in terms of the lumbo-pelvic stability, lumbar lordosis, lumbar flexion and extension range of motion. The present study supported that lumbar lordosis, lumbar mobility, and lumbo-pelvic stability not affected by CLBP.