The Impact of Twisting on The Extent of Lower Lumbar Spine Lateral Flexion Among Healthy Subjects

Background: It is acknowledged that 84% of cases of pain are related to the spine. In one instance, low back pain is reduced by the spinal adjustment technique, which is predicated on exerting external stresses on the shoulder and pelvis to twist the human spine. A deeper comprehension of the biomechanical behaviour of the typical lumbar spine in each lower trunk rotational position will yield important information that can be translated into improved physical treatment line. Objective of study: The objective of this study was to utilize MRI to find how different lower trunk twisting positions influenced the extent of lower lumbar spine lateral flexion. Materials and Methods: Sagittal T2 weighted Magnetic resonance images of fifteen males with healthy spine structures were collected in order to evaluate the consequences of right and left lumbar spine rotations on the extent of lateral flexion of their lower backs. The extent of the lateral flexion at each contiguous lower lumbar vertebrae was measured manually by using image J software. Results: In proportion to the lower lumbar twisting positions, the extent of lateral flexion at the last three lumbar levels increased. At all twisting positions, the lateral flexion degree was greatest at fourth- fifth lumbar level. The mean differences of lateral flexion angle were significant only in the left twisting position at the fourth and fifth lumbar levels. Conclusion: The extent of lateral flexion at all lower lumbar segments grew in synchrony with the lower lumbar twisting positions. fourth–fifth lumbar level had the largest lateral flexion angle. But only in the left rotational position did the effect become noticeable. Consequently, this level may be the primary target of manipulative therapy during treatment.