This article was written by Assoc. Prof. Dr. Burak Sercan Erçin and is based on clinical experience. A specialist in Plastic, Reconstructive and Aesthetic Surgery; prepared in accordance with current medical literature and personal surgical data. A consultation is recommended before making any medical decisions.
TOS (Thoracic Outlet Syndrome) is a condition that impacts the nerves and blood vessels in the thoracic outlet, which is the space between the neck and the armpit. The syndrome occurs when the nerves and blood vessels that run through this area are compressed or pressed. This can cause a variety of TOS symptoms, including:
- Neck, shoulder, and arm discomfort
- Hand tingling, numbness, or weakness
- Hand swelling or discoloration
- Reduced grip strength
- Arm and shoulder range of motion is limited.
- Tenderness or pain in the chest
Causes of Thoracic Outlet Syndrome
There are a number of factors, including the following reasons, that have the potential to contribute to the development of TOS:
- Physical activities that involve repetitive motions, such as typing or playing a musical instrument
- Poor posture
- Obesity
- Pregnancy
- Structural problems, such as an extra rib or a cervical rib
- Injuries or trauma to the neck, shoulder, or arm
- Arthritis
Diagnosing Thoracic Outlet Syndrome
TOS can be hard to figure out because its symptoms often look like those of other conditions, like carpal tunnel syndrome or tennis elbow. A doctor will usually do a physical exam to diagnose TOS.
This physical exam will include tests to check the strength, sensation, and range of motion in the body parts that are affected. Imaging tests, such as an X-ray, CT scan, or MRI, may also be performed to help confirm the diagnosis.
How to Prevent Thoracic Outlet Syndrome
To lower your risk of TOS, it’s important to have good posture, stay at a healthy weight, and avoid doing repetitive motions that could put pressure on the nerves and blood vessels in the thoracic outlet.
Getting regular exercise and stretching can also help prevent TOS because it makes your neck, shoulder, and arm more flexible and strong.
- Thoracic Outlet Syndrome Exercises & Postures
TOS can be managed in a number of ways, one of which is through the use of exercises and postures that can help alleviate symptoms and improve the range of motion.
Some exercises that can help manage TOS include shoulder blade squeezes, scapular retraction, and arm raises. These exercises are meant to strengthen the muscles in the shoulder and upper back, which will relieve pressure on the nerves and blood vessels.
In addition to exercises, paying attention to posture can also help manage TOS. This means avoiding positions that put a strain on the neck and shoulders, such as hunching over a computer for extended periods of time. Practicing good posture, such as sitting up straight with the shoulders back, can help reduce the symptoms of TOS.
Living with Thoracic Outlet Syndrome: Tips for Daily Use
For those who are living with TOS, there are several steps that can be taken to manage symptoms and improve daily function. These may include:
- Practicing good posture
- Maintaining a healthy weight
- Avoiding repetitive motions that may worsen symptoms
- Incorporating regular exercise and stretching into your routine
- Using assistive devices, such as wrist splints or ergonomic keyboards, to reduce pressure on the thoracic outlet
- Seeking treatment from a doctor or physical therapist to manage symptoms and improve overall function
Treatment Options for Thoracic Outlet Syndrome
The plan for treating TOS will depend on what causes the syndrome and how bad the symptoms are. In many cases, conservative treatments like physical therapy, painkillers, and changes in lifestyle are enough to ease symptoms. If these measures are not effective, more invasive treatments, such as surgery, may be necessary.
- Thoracic Outlet Syndrome Surgery
In some cases, surgery may be necessary to treat Thoracic Outlet Syndrome (TOS). This decision is typically made after conservative measures such as physical therapy, medication, and lifestyle changes have failed to provide results or relief to the person in question.
Surgery for TOS aims to relieve the pressure on the nerves and blood vessels that are causing symptoms. Surgical options include removing the first rib, rerouting the blood vessels, and removing or releasing soft tissue that is pressing on the nerves.
The specific surgical approach will depend on the underlying cause of TOS and the specific symptoms experienced by the patient. Following surgery, you will probably and most typically undergo physical therapy and rehab to regain strength and mobility.
Even though surgery is more of a major intervention, it can help relieve TOS symptoms for a long time. Patients should talk to their reconstructive surgeon about the pros and cons of surgery to figure out what the best course of treatment is for them.
Thoracic Outlet Syndrome FAQ
What are the three main types of thoracic outlet syndrome?
There are three main types of TOS: neurogenic (compression of the brachial plexus nerves), venous (compression of the subclavian vein), and arterial (compression of the subclavian artery). Neurogenic TOS is by far the most common, accounting for over 90% of all cases, while venous TOS makes up 3–5% and arterial TOS only 1–2%.
How is thoracic outlet syndrome diagnosed?
Diagnosis begins with a detailed medical history and a physical exam that includes provocative movement tests such as the Elevated Arm Stress Test (EAST) and the Upper Limb Tension Test. Imaging studies like X-ray, MRI, CT, or duplex ultrasound may be ordered to identify a cervical rib, rule out other conditions, and confirm vascular compression.
Who is most at risk of developing TOS?
TOS is more common in women than men and typically appears between the ages of 20 and 50. People with poor posture, weak shoulder-girdle muscles, a congenital cervical rib, a history of neck trauma or whiplash, or those who perform repetitive overhead activities (swimmers, pitchers, weightlifters, musicians, office workers) are at higher risk.
Can thoracic outlet syndrome go away on its own?
Mild cases sometimes improve with rest and posture correction, but TOS usually does not resolve fully without targeted treatment. With conservative therapy, however, symptoms resolve in roughly 90% of neurogenic cases, so most patients recover well without surgery.
What is the first-line treatment for TOS?
The first-line treatment for neurogenic TOS is conservative: physical therapy focused on posture, scalene stretching, and strengthening of the shoulder girdle, combined with activity modification and anti-inflammatory medication. Surgery is reserved for cases that fail conservative care or for vascular TOS, which usually requires prompt intervention.
When is surgery needed for thoracic outlet syndrome?
Surgery is considered when conservative treatment fails to relieve neurogenic symptoms, or when the diagnosis is venous or arterial TOS, where blood clots, aneurysm, or ischemia are a risk. The most common procedure is thoracic outlet decompression, which typically involves first-rib resection, scalenectomy, and release of any fibrous bands or cervical rib compressing the neurovascular bundle.
What does TOS surgery recovery look like?
Most patients stay in hospital for 1–3 days and return to light daily activity within 2–4 weeks. Structured physical therapy is essential to rebuild strength and range of motion, and full recovery, including return to sport or heavy work, generally takes 3 to 6 months depending on the type of TOS and the patient’s baseline condition.
Can poor posture really cause thoracic outlet syndrome?
Yes. Forward head posture, rounded shoulders, and prolonged sitting at a computer narrow the space between the collarbone and first rib, tighten the scalene muscles, and place chronic tension on the brachial plexus. Over time this postural pattern is one of the most common contributors to neurogenic TOS.
How is TOS different from carpal tunnel syndrome?
Carpal tunnel syndrome involves compression of the median nerve at the wrist and produces numbness mainly in the thumb, index, and middle fingers. TOS involves compression higher up, between the neck and armpit, and symptoms typically include the whole arm, the ring and little fingers, and are often provoked by raising the arms overhead — a movement that does not usually worsen carpal tunnel.
Is thoracic outlet syndrome a permanent condition?
It does not have to be. With accurate diagnosis, physical therapy, ergonomic correction, and — when needed — decompression surgery, most patients achieve long-term relief. Untreated TOS, however, can lead to permanent nerve damage, chronic pain, blood clots, or arterial complications, which is why early evaluation by an experienced surgeon is important.
Dr Burak Professional Reconstructive TOS Surgeries
Dr. Burak Sercan will answer all of your questions about TOS and how to prevent, treat, and live with it. In some cases, arm surgery might be an option, which is a very critical decision for many people. Get in touch with us right away on our Email , Phone, or Contact Us page for the best prices and health services available.
This content was written by Assoc. Prof. Dr. Burak Sercan Erçin in line with clinical experience and current medical literature. It is intended for general informational purposes only and does not constitute medical advice. A personal consultation with Dr. Erçin is recommended for individual assessment.
Faculty Member · Bahçeşehir University
Graduate of Ege University Faculty of Medicine, Assoc. Prof. Dr. Erçin completed advanced fellowships at Tampa General Hospital (USA) under Dr. Deniz Dayıcıoğlu in breast reconstruction and burn surgery, and at the clinic of Dr. Pedro Cavadas in Valencia, Spain in reconstructive microsurgery. After passing the EBOPRAS examination in 2018, he joined Bahçeşehir University as a faculty member and continues his private practice on Bağdat Avenue, Istanbul, specialising in face, breast and body aesthetics alongside complex reconstructive surgery.
