Thesis (M.Sc.) - Cairo University - Faculty of Physical Therapy - Department of Physical Therapy Neuromuscular and Neurosurger

Each person has a unique posture and spinopelvic balance with a particular set of sagittal alignments. Alterations in postural control have been reported in persons with low back pain (LBP). The purposes of this study were to evaluate the biomechanical features of the lumbosacral region in patients with low back pain secondary to lumbar spondylosis and to determine if there was a relationship between postural stability and sacral angle in patients with low back pain as a result of lumbar spondylosis. Methods: Twenty participants suffering from lumbar spondylosis were included in this study. Postural stability was measured using computerized dynamic posturography (Smart Balance Master and the Balance Master systems) as methods of laboratory examination for postural stability. The computerized dynamic posturography tests included rhythmic weight shift and limits of stability tests. Also, sacral angle was objectively measured for patients using plain X-ray. Results: The results showed that there is a significant correlation between changes in sacral angle (increase/decrease) and postural instability in patients with back pain secondary to lumbar spondylosis. Conclusion: There is a significant correlation between medio-lateral stability and increase in sacral angle in patients with low back pain as a result of lumbar spondylosis. There is a significant correlation between antero-posterior stability and increase in sacral angle in patients with low back pain as a result of lumbar spondylosis

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