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. Previous statistics on thoracic disc pathology relied on the use of iodobenzyl myelography as a diagnostic method. the understanding of thoracic disc herniation has changed with the advent of safer, non-invasive and more advanced diagnostic techniques, MRI and CT. awwad and colleagues diagnosed 68 patients with asymptomatic thoracic disc herniation after observing CT scans (CTM) after myelography in 433 patients. Wood and colleagues reported MRI imaging findings of thoracic disc degeneration in 55% of adults under 40 years of age without symptoms of chest pain, and acute thoracic disc herniation in 37% of asymptomatic individuals, of whom 40% had multiple disc herniations of more than one segment. In addition, the autopsy of 368 unselected cadavers revealed that 15.2% had thoracic disc herniation. This shows that there are many people with thoracic disc herniation without clinical manifestations, mainly because the sagittal diameter of the thoracic spinal canal is large in these patients, so that the herniated nucleus pulposus tissue is not enough to compress the spinal cord. The disease is mostly due to chronic strain or spinal injury, and can be triggered by various traumatic injuries, such as falls from heights, falls, and repeated spinal sprains, in addition to factors such as improper posture, forced prolonged posture, and excessive bending. In short-onset cases, the herniated nucleus pulposus is mostly elastic and soft, while in long-onset cases, the herniated nucleus pulposus becomes hard with the encapsulation and contraction of fibroblasts, or it may become calcified or ossified and adhere to the posterior longitudinal ligament, fixing it at the posterior edge of the vertebral segment, which is often one of the causes of extensive segmental damage to the spinal cord.