A herniated disc can cause intercostal scapular girdle pain by compressing the spinal nerve roots at the root canal nerve outlet. Intercostal scapular pain is a clinical manifestation of thoracic disc herniation. How is a thoracic disc herniation diagnosed? In clinical practice, the diagnosis of this disease is based on the following 3 points: 1. Medical history The onset of the disease can be acute or slow, and the symptoms vary in severity, so a comprehensive understanding should be obtained, including previous examinations and treatment profiles. 2.Clinical manifestations Because the size of the sagittal diameter of the spinal canal varies among patients, their symptoms also vary greatly, ranging from general local vague pain to complete paralysis of the lower extremities, so careful examination of such patients should be noted for early detection. 3, imaging examination (1) X-ray examination: conventional frontal and lateral X-ray plain films of the thoracic spine are preferred; it is reported that 20% to 50% of patients with thoracic disc herniation have calcified intervertebral discs in the spinal canal. (2) Myelography: Myelography with high-dose water-soluble contrast agent along with CT scan is a more accurate and excellent diagnostic method. If CT is used directly without myelography, the exact segment of the damaged spinal cord will be mistaken. However, most scholars now believe that this type of injury examination should be replaced by MRI, which is also a longitudinal method of looking at the entire thoracic spinal canal. (3) CT and MRI examinations: MRI examinations should be performed early in all cases where this disease is suspected. The authors found that MRI examination is the most effective measure for early diagnosis and timely treatment of the disease. In addition, myelography and CT examination are also helpful for the diagnosis of this disease, but because their diagnosis rate is not as good as MRI examination, they should not be used as the first choice of examination items. 4, other tests, including electromyography and somatosensory evoked potentials, are not helpful in the diagnosis of thoracic disc herniation.