Upper back pain gets less attention than neck or lower back pain, but it affects millions of people and can be just as disruptive. The thoracic spine has unique anatomy that creates distinct pain patterns. Understanding what's going on between your shoulder blades is the first step toward fixing it.
Thoracic Spine Anatomy: What Makes It Different
The thoracic spine consists of 12 vertebrae (T1 through T12) that form the middle section of your spinal column. Unlike the cervical and lumbar regions, each thoracic vertebra connects to a pair of ribs. This rib attachment creates a rigid cage that protects your heart and lungs but also limits how much the thoracic spine can move.
Normal thoracic kyphosis (the outward curve of the upper back) ranges from 20 to 45 degrees. This natural curve is structural and healthy. Problems arise when the curve increases beyond this range, a condition called hyperkyphosis, which many people recognize as a hunched or rounded upper back.
Because the thoracic spine is inherently stiffer than the neck or lower back, disc herniations here are far less common. Only about 1% of all disc herniations occur in the thoracic region. Instead, most upper back pain originates from the muscles, facet joints, or costovertebral joints where the ribs meet the spine.
For a broader view of how the three spinal regions work together, see our spinal health guide.
Common Causes of Upper Back Pain
Postural muscle overload. This is the most frequent cause. When you sit with a forward-rounded posture for hours, the muscles of the upper back (middle trapezius, rhomboids, erector spinae) are stretched and overworked while they try to prevent further rounding. Meanwhile, the chest muscles shorten and tighten. This imbalance creates a persistent, aching pain between the shoulder blades that worsens throughout the workday.
Thoracic facet joint dysfunction. The facet joints are small paired joints on the back of each vertebra that guide spinal movement. When these joints become restricted or inflamed, they produce localized pain that can radiate along the rib line. Facet pain often worsens with extension (arching backward) or rotation and is tender to direct pressure over the affected segment.
Costovertebral joint dysfunction. Each rib connects to the thoracic spine at two points: the costovertebral joint (rib head to vertebral body) and the costotransverse joint (rib to transverse process). When these joints become restricted or inflamed, the pain can feel sharp with deep breathing, twisting, or coughing. This condition is commonly misdiagnosed as muscle strain or even cardiac pain when it occurs on the left side.
Thoracic hyperkyphosis. Excessive rounding of the upper back stresses every structure in the region: muscles are stretched, discs are loaded asymmetrically, and facet joints are compressed. Over time, this creates a self-reinforcing pattern where stiffness leads to more rounding, which leads to more stiffness. Our posture correction guide addresses this pattern directly.
Myofascial trigger points. Tight, irritable spots within muscle tissue can refer pain to distant areas. Trigger points in the infraspinatus muscle (on the shoulder blade) can refer pain down the arm. Trigger points in the levator scapulae and upper trapezius can create pain from the upper back to the base of the skull, overlapping with cervical spine pain patterns.
How Is Upper Back Pain Diagnosed?
Most upper back pain can be diagnosed through a thorough physical examination without imaging. Your clinician should assess:
- Posture: Forward head position, increased kyphosis, shoulder protraction, scapular winging
- Range of motion: Thoracic flexion, extension, rotation, and lateral bending. Limited rotation or extension often points to facet joint involvement.
- Palpation: Direct pressure over facet joints, costovertebral joints, and paravertebral muscles to identify the pain generator
- Rib spring test: Anterior-to-posterior pressure on individual ribs to assess costovertebral joint mobility
- Neurological screen: Sensation, reflexes, and strength testing to rule out nerve involvement
Imaging (X-ray, MRI) is typically reserved for cases involving trauma, neurological symptoms, suspected fracture, or pain that doesn't improve with 4 to 6 weeks of treatment. According to the American College of Radiology, routine imaging for uncomplicated upper back pain is not recommended.
Treatment and Exercises for Thoracic Pain
Treatment depends on the specific cause, but most upper back pain responds well to a combination of manual therapy and targeted exercise.
Thoracic spine manipulation. Spinal manipulation (adjustments) to the thoracic region has strong evidence for reducing pain and improving mobility. A 2012 systematic review found that thoracic manipulation provided immediate pain relief for upper back conditions and was also effective as a complementary treatment for neck pain.
Rib mobilization. For costovertebral dysfunction, specific mobilization techniques applied to the affected rib joints can produce rapid improvement. Many patients describe near-immediate relief in breathing comfort once the restricted rib is mobilized.
Exercises you can start today:
Foam roller thoracic extension. Lie on a foam roller placed horizontally under your mid-back, with your hands behind your head. Gently extend over the roller, hold for 3 seconds, then curl back up. Move the roller to different segments and repeat. Do 2 sets of 10 at each level. This is the single best exercise for thoracic mobility.
Prone Y-T-W raises. Lie face-down on the floor or a bench. Raise your arms into a Y position (thumbs up), hold for 5 seconds, lower. Repeat with arms in a T position, then a W position. Do 8 repetitions of each. This targets the lower trapezius, rhomboids, and rotator cuff muscles that support scapular position.
Open book rotation. Lie on your side with your knees bent to 90 degrees. Extend your top arm forward, then slowly rotate your thoracic spine to open your chest toward the ceiling. Follow your hand with your eyes. Hold for 3 seconds at the end range. Do 10 repetitions per side. This improves thoracic rotation, which is often the first movement to become restricted.
Scapular wall slides. Stand with your back against a wall. Place your forearms against the wall in a 90-degree "goalpost" position. Slide your arms up and down the wall, maintaining contact throughout. If your arms come off the wall, you've identified a range-of-motion limitation to work on. Do 2 sets of 12.
How Lower Back Pain Connects to Upper Back Problems
The spine doesn't work in isolated segments. Thoracic stiffness forces the lumbar spine and cervical spine to compensate by moving more than they should. This is one reason why people with chronic upper back stiffness often develop lower back pain over time.
The reverse is also true. Excessive lumbar lordosis (sway back) can tip the pelvis forward, which changes the position of the entire spinal column above it, including the thoracic curve. Treating upper back pain in isolation without considering the rest of the kinetic chain often leads to incomplete results.
A full-spine assessment helps identify which region is driving the problem versus which is compensating. Sometimes the painful area isn't where the actual dysfunction lives.
When to Get Urgent Help
Most upper back pain is musculoskeletal and resolves with appropriate treatment. However, certain warning signs require prompt medical evaluation:
- Upper back pain following significant trauma (fall, car accident, sports collision)
- Numbness, tingling, or weakness in your legs
- Loss of bowel or bladder control
- Upper back pain with chest tightness, shortness of breath, or radiating left arm pain (rule out cardiac causes)
- Pain that worsens at night or wakes you from sleep consistently
- Unexplained weight loss combined with persistent back pain
- History of cancer with new-onset thoracic pain
- Fever accompanying back pain
These symptoms don't automatically mean something serious is happening, but they do warrant investigation beyond a standard musculoskeletal exam.
Frequently Asked Questions
What causes upper back pain between the shoulder blades?
Pain between the shoulder blades usually comes from muscular strain, poor posture, or thoracic joint dysfunction. The rhomboids and middle trapezius muscles connect the shoulder blades to the spine, and they become overworked when the chest muscles are tight and the upper back rounds forward. Thoracic facet joint irritation and costovertebral (rib) joint dysfunction are also common causes.
When should I worry about upper back pain?
Seek immediate medical attention if your upper back pain follows trauma, is accompanied by numbness or weakness in your legs, occurs with chest pain or difficulty breathing, or is associated with unexplained weight loss. Pain that wakes you from sleep, progressively worsens despite rest, or is accompanied by fever also warrants prompt evaluation.
Can poor posture cause thoracic spine pain?
Yes. Prolonged slouching increases the thoracic kyphosis beyond its normal 20 to 45 degree range, overloading the posterior ligaments, stretching the extensor muscles, and compressing the anterior portions of the thoracic discs. Over time, this creates a cycle of stiffness, weakness, and pain that reinforces the poor posture pattern.
How do you relieve upper back pain fast?
For quick relief, try thoracic extension over a foam roller, ice for 15 to 20 minutes if there's inflammation, or gentle scapular squeezes (10 repetitions, hold 5 seconds each). A tennis ball placed between your upper back and a wall can target specific trigger points. These provide temporary relief; lasting improvement requires addressing the underlying cause through posture correction and strengthening.