Prolonged lumbar disc herniation with gradually worsening symptoms or very severe lumbar disc herniation can lead to the inability to lift the leg. There are two main reasons for this. 1, the lumbar disc herniation is very long and the symptoms are gradually aggravated, which can lead to muscle atrophy in the lower limbs and the feeling of not being able to lift without strength. 2, there is a very serious lumbar disc herniation or there is a lumbar disc herniation along with an acute injury from external forces, which leads to extremely serious nerve damage and nerve loss, the whole leg will not have movement and sensation and cannot be lifted at this time. And the symptoms that occur simply from a herniated lumbar disc cause a situation where the leg cannot be lifted. Regardless of the type, surgical treatment should be actively sought, and the cause of the nerve compression must be completely removed in order to provide room for the nerve to recover.