What are the inspection methods for lumbar disc herniation?

The examination method of lumbar disc herniation is as follows: 1. X-ray examination can not directly reflect lumbar disc herniation, but can show signs of spinal degeneration, such as lateral process, flattening of anterior lumbar arch, unequal left-right width of intervertebral space, narrow front and wide back, and narrowing of intervertebral space. Besides serving as a reference for the diagnosis of disc herniation, purulent inflammation, tuberculosis and tumor of lumbar spine can also be ruled out, which is an indispensable examination method. 2. The diagnostic rate of myelography is 70%-80%. No matter whether oil-soluble iodine agent or water-soluble iodine agent is selected, there are certain side effects, so attention should be paid to the prevention and treatment of complications when applying this kind of examination. 3. EMG examination By measuring the EMG of muscles innervated by nerve roots of different segments, the damaged nerve roots can be determined according to the range of abnormal myoelectric potential distribution. The position of nerve compression can be inferred from the relationship between nerve root and intervertebral foramen. 4.MRI examination can fully reflect whether each lumbar intervertebral disc is prominent, the degree and location of protrusion. Its disadvantage is that when multiple line segments protrude at the same time, it is impossible to determine the main line segment.