Straightening of the curvature of the lumbar spine is a chronic process, mainly due to long-term poor posture, lumbar strain and degeneration and hyperplasia of the lumbar spine, including a decrease in the strength of the tendons, muscles and ligaments around the lumbar area, resulting in instability of the lumbar spine, which leads to straightening of the curvature of the lumbar spine over time. In the absence of violent trauma, it will not produce symptoms of paralysis because it is a chronic process in itself, and although the straightening of the curvature does not necessarily produce corresponding compression of the nerves in the lower limbs, leading to neurological symptoms. If the straightening of the lumbar curvature is combined with acute trauma, resulting in a fracture of the lumbar spine or even a more severe nerve compression, it may lead to symptoms of paralysis. However, the straightening of the lumbar curvature due to a chronic process does not produce paralysis, and sometimes may produce back pain, radiating pain in the lower extremities, and other nerve root compression, but the symptoms of paralysis generally do not occur.