CT shows that L5S1 herniated disc means that the disc between these two cones has herniated.L5 refers to the fifth lumbar vertebra and S1 refers to the first sacrum. Herniated disc refers to the degenerative changes in the intervertebral disc, under the action of external forces, the annulus fibrosus ruptures partially or completely, and the nucleus pulposus or cartilage plate protrudes backward and irritates the nerves, causing low back and leg pain as the main symptom of the lesion. The human spine is divided into four parts: cervical, thoracic, lumbar and coccygeal, with 7, 12, 5 and 5 vertebrae, which are represented by C, T, L and S respectively. The number at the back represents the first vertebra, for example, L1 represents the first vertebra of the lumbar spine, and there are intervertebral discs between each vertebra for support and shock absorption. If you have any related diseases, it is recommended that you go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.