The nutritional blood supply to the lumbar intervertebral disc begins to occlude at approximately 8 months of age in infancy and is completely occluded by age 20, resulting in a poor local blood supply to the disc in adults. Studies have shown that only a small number of small blood vessels on the surface of the annulus fibrosus supply blood and innervated nutrition to the sinus nerve, while the cartilage end plate and nucleus pulposus have no blood vessels and nerve structures, and the nutrition of the intervertebral disc mainly relies on the vertebral body blood vessels and tissue fluid through osmosis.