My father had cauda equina syndrome but he didn’t hurt hit back in any way that he remembers. His doctor said his spinal canal had narrowed. Could this be a cause?

Cauda equina syndrome is pressure on the cauda equina, the nerve roots in the lower, or lumbar, back. This pressure could be from a back injury, but it also can happen if the spinal canal narrows, also called stenosis. This can be caused by an injury that your father may not recall or by diseases or tumors in the spine.