What is the thoracic spine?
The thoracic spine, also called the thoracic spine, extends from the lower part of the neck to the transition to the lumbar spine. It consists of twelve vertebrae, T1 to T12. Between most vertebrae are discs that act as shock absorbers, and at the back are facet joints that help control movement.
The ribs attach to the thoracic spine. This makes the area more stable than the cervical and lumbar spine, but also means that pain can be affected by breathing, rotation and movements of the chest. The spinal cord runs through the vertebral canal, and nerve roots leave the spine between the vertebrae.
Thoracic back pain is often experienced between the shoulder blades or as a band around the rib cage. The feeling can come from muscles and joints, but sometimes also from vertebrae, discs, nerves or other parts of the body.
What is the function of the thoracic spine?
The thoracic spine has several tasks at once. It carries part of the body's weight, protects the spinal cord, and, together with the ribs, forms a stable framework around the heart and lungs. It allows for rotation and some bending, while limiting excessive movement.
The muscles around the thoracic spine help with posture, arm movements and breathing. When the shoulder blades, shoulders and thoracic spine work together, the load is distributed better. Prolonged sitting, one-sided working positions or unusual movements can therefore cause fatigue and tension in the area.
The function of the thoracic spine is also affected by the cervical spine, lumbar spine and hips. Therefore, discomfort does not always have to come from the exact location where the pain is felt.
Common thoracic spine complaints
Common causes of pain in the thoracic spine include muscle tension, overuse, joint stiffness, and irritation after an unusual movement. The pain can worsen when you twist your upper body, sit for a long time, or take a deep breath. Read more about thoracic back pain and pain between the shoulder blades.
Other possible causes include vertebral compression, inflammation, injury or changes affecting the spinal cord and nerve roots. Herniated discs in the thoracic spine occur, but are less common than in the cervical and lumbar spine.
Pain from the heart, lungs, esophagus, bile ducts, or other organs can sometimes be felt in the chest or back. Therefore, new, severe pain should not automatically be interpreted as a muscle problem.
When should you seek care for your thoracic spine?
Contact your healthcare provider if the pain is severe, recurs, does not improve, or affects sleep and daily life. Assessment is also important after a fall or other trauma, especially if you have osteoporosis or are taking medications that affect the bones.
Seek immediate medical attention if you have a fever, unexplained weight loss, nighttime pain, increasing numbness, weakness, or problems with walking and balance. Sudden chest pain, difficulty breathing, cold sweats, or pain that radiates to the arm or jaw should be evaluated urgently.
If you experience significant weakness in your legs, decreased sensation, or problems controlling urine and stool, you need urgent assessment because the spinal cord or nerves may be affected.
How are thoracic spine complaints investigated?
The examination usually begins with questions about when the pain started, where it is located, whether it is affected by movement or breathing, and whether you have neurological or general symptoms. The doctor may examine mobility, muscles, reflexes, sensation, and strength.
Imaging is not needed for all back problems. X-rays may be relevant if there is suspicion of vertebral compression or other skeletal changes. CT provides detailed images of the skeleton and can be used in trauma. MRI provides better information about the spinal cord, discs, nerve roots, bone marrow and soft tissues.
Blood tests or examinations of the heart, lungs, and abdomen may be needed if the symptoms suggest that the pain is coming from something other than the spine.
When can MRI of the thoracic spine be relevant?
MRI thoracic spine may be relevant when there is suspicion of an impact on the spinal cord or nerve roots, in certain tumor or inflammation issues, in long-term problems with warning signs or when previous examinations do not explain the symptoms.
MRI is not automatically the right first examination for common muscle pain. If the question is primarily about an acute fracture or other skeletal injury, X-ray or CT may be more appropriate. The choice is guided by symptoms, clinical findings and what the healthcare needs to know.
An MRI finding always needs to be interpreted in conjunction with how you feel. Age-related changes can be present without causing pain, and a normal response does not rule out all causes.
Limitations and next steps
Thoracic back pain has many possible causes, and no single examination can provide all the answers. Imaging diagnostics show structure but not always why you are in pain. Treatment may therefore be based on movement, physiotherapy, pain relief, treatment of osteoporosis or other targeted care depending on the cause.
If a finding is detected, the next step may be additional imaging, blood tests, referral to a specialist or follow-up over time. In case of deterioration or new neurological symptoms, you should seek care again even if you have been examined previously.