Intervertebral Disk of Thoracic Vertebra T4 (T4–T5) (Discus intervertebralis T4–T5)
Educational content only — not medical advice.
Anatomy
The intervertebral disk between thoracic vertebrae T4 and T5 is a fibrocartilaginous joint supporting the thoracic kyphosis. Characterized by a relatively uniform thickness and reinforced laterally by the costovertebral joints and rib cage, it provides stability and load dissipation across the mid-trunk with limited rotation.
Clinical notes
Thoracic disc herniation at the T4–T5 level is rare due to the splinting effect of the rib cage; when it occurs, it may compress the spinal cord or exiting thoracic root, presenting with band-like intercostal chest wall pain or progressive myelopathy.
Related structures
Educational references
FAQ
What is the role of the Intervertebral Disk of Thoracic Vertebra T4 (T4–T5)?
The intervertebral disk between thoracic vertebrae T4 and T5 is a fibrocartilaginous joint supporting the thoracic kyphosis. Characterized by a relatively uniform thickness and reinforced laterally by the costovertebral joints and rib cage, it provides stability and load dissipation across the mid-trunk with limited rotation.
Why is the Intervertebral Disk of Thoracic Vertebra T4 (T4–T5) clinically important?
Thoracic disc herniation at the T4–T5 level is rare due to the splinting effect of the rib cage; when it occurs, it may compress the spinal cord or exiting thoracic root, presenting with band-like intercostal chest wall pain or progressive myelopathy.
Source & license
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