Exploring the relationship between the degree of fatty infiltration of multifidus muscle and the maximum compression degree of lumbar spinal canal in patients with lumbar disc herniation

To explore the relationship between the degree of fatty infiltration of the lumbar multifidus muscle and the maximum compression degree of the lumbar spinal canal in patients with lumbar disc herniation (LDH); The second objective is to investigate the relationship between the degree of fatty infiltration of the lumbar multifidus muscle and the Oswestry Disability Index.