Thoracic Outlet Syndrome: An Overlooked Cause of Shoulder and Arm Pain
Do you experience ongoing pain, tingling, or weakness in your shoulder, arm, or hand especially when sitting at a desk, driving, or lifting your arms overhead? If so, you could be dealing with Thoracic Outlet Syndrome (TOS), a condition that often goes undiagnosed or mislabelled as something else.
At Tugun Osteopathy, we regularly see patients who have been struggling with these symptoms for months or even years without clear answers. Here’s what you need to know about Thoracic Outlet Syndrome, and how osteopathy can offer relief.
What is Thoracic Outlet Syndrome?
Thoracic Outlet Syndrome occurs when nerves and/or blood vessels are compressed as they travel through a narrow space between the neck, collarbone (clavicle), and first rib known as the thoracic outlet.
This space can become restricted due to poor posture, trauma, muscular imbalances, or anatomical variations leading to compression of the brachial plexus (nerves) or subclavian vessels.
Common Causes of Thoracic Outlet Syndrome
Poor posture (rounded shoulders, forward head)
Repetitive overhead activity (e.g., painting, lifting, sports)
Previous trauma (whiplash, broken collarbone, rib injuries)
Muscle tightness, especially in the scalene and pectoralis minor muscles
Cervical rib (an extra rib above the first rib in some people)
Symptoms of Thoracic Outlet Syndrome
Symptoms may vary depending on whether the nerves or blood vessels are being compressed:
Neurogenic TOS (most common type):
Numbness or tingling in the arm, hand, or fingers
Weakness or fatigue in the arm and hand
Pain in the neck, shoulder, or along the inside of the arm
Worsening symptoms with prolonged posture or overhead activity
Vascular TOS:
Coldness or discoloration in the arm or hand
Swelling or a heavy sensation in the arm
Pulsing or throbbing sensations
Many people don’t realise their symptoms are linked to nerve or vascular compression at the thoracic outlet not the shoulder joint itself.
How Can Osteopathy Help?
Osteopaths take a whole-body approach to assessing and treating Thoracic Outlet Syndrome. We aim to restore proper alignment and movement to relieve pressure on the compressed structures.
Osteopathic treatment for TOS may include:
Manual therapy to release tight muscles (like scalenes, pec minor, and upper traps)
Joint mobilisation for the neck, upper back, ribs, and shoulders
Postural correction strategies for work and daily life
Breathing retraining to reduce upper rib dominance and tension
Targeted exercises to restore strength and control in shoulder stabilisers
We also assess contributing factors like breathing patterns, spinal mobility, and nerve sensitivity, offering a comprehensive approach to recovery.
When to See an Osteopath
If you're experiencing any of the following, a thorough assessment is essential:
Pins and needles in the hands or fingers
Shoulder or neck pain that worsens with posture
Weakness or heaviness in the arm
Discomfort with overhead movement
Ongoing pain that hasn’t responded to typical shoulder treatment
Key Takeaways
Thoracic Outlet Syndrome is a commonly overlooked cause of shoulder, neck, and arm pain.
It involves compression of nerves or blood vessels between the neck and shoulder.
Osteopathy offers non-invasive, hands-on treatment to reduce compression, improve posture, and relieve symptoms naturally.