What are the four types of TOS?

While some classifications list five, there are generally three main types of Thoracic Outlet Syndrome (TOS): Neurogenic (nerves compressed, most common), Venous (vein compressed, causing clots/swelling), and Arterial (artery compressed, rarest/most serious), distinguished by the structure being pinched in the space between the collarbone and first rib. A less common "Disputed" type also exists, but the primary focus in diagnosis and treatment is on these three vascular and neurological categories.

What are the different types of TOS?

What are the types of thoracic outlet syndrome?

• Neurogenic TOS occurs when the nerves leading from the neck to the arm (the brachial plexus) is compressed. ...
• Venous TOS occurs when a vein is compressed, leading to upper body thrombosis. ...
• Arterial TOS occurs when an artery is compressed.

What flares up TOS?

Thoracic Outlet Syndrome (TOS) flares up due to activities that compress nerves/vessels in the thoracic outlet, like repetitive overhead arm movements, poor posture (slouching), heavy lifting, traumatic injuries (whiplash), and even stress or certain sports (swimming, baseball). Anatomical factors, like an extra rib, also predispose people to flare-ups, causing pain, numbness, tingling, and weakness in the arm, hand, or fingers.
 

What is the most common thoracic outlet syndrome?

The most common type, neurogenic thoracic outlet syndrome, is caused by the compression of the brachial plexus, a network of nerves that extend from the spine through the neck and into the arm.

Which fingers go numb with thoracic outlet syndrome?

Patients with thoracic outlet syndrome will most often complain of pain that extends down the arm, usually in the hand - specifically, the fourth and fifth fingers (the ring finger and pinky only) - but can also involve the forearm and upper arm.

Unlock The Mystery: Exploring 5 Types Of Thoracic Outlet Syndrome!

What are the red flags of thoracic outlet syndrome?

Red flags for Thoracic Outlet Syndrome (TOS) include nerve symptoms like persistent numbness, tingling (especially pinky/ring fingers), weakness, and clumsiness in the arm/hand, alongside vascular signs such as arm swelling, bluish discoloration, a cold feeling, weak pulse, or slow-healing sores, often worsening with overhead arm movements. Key indicators also involve specific pain in the neck/shoulder/arm and a pulsating lump near the collarbone, signaling potential nerve or blood vessel compression.
 

Where does MS numbness usually start?

Numbness in Multiple Sclerosis (MS) often starts in the extremities, like hands or feet, and can then travel up the arms or legs, but it can also appear in the face, arms, legs, or torso, sometimes affecting just one side or the lower body. This tingling or "pins and needles" sensation usually begins subtly, feeling like a limb is asleep, and can be an early sign of nerve damage, often coming and going.
 

What is the gold standard for thoracic outlet syndrome?

There is no “gold standard” for diagnosing thoracic outlet compression syndrome (TOS), however, anesthetic blocks of the anterior scalene muscle (ASM) have been used as a means of predicting which patients may benefit from surgical decompression.

Why is TOS so hard to diagnose?

Thoracic Outlet Syndrome (TOS) is hard to diagnose because its symptoms (pain, tingling, numbness) mimic many other common conditions, there's no single definitive test, symptoms vary widely between individuals and change with posture, and it has different types (neurogenic, vascular) requiring different approaches, making an experienced specialist essential for accurate diagnosis through history, physical exams, and targeted imaging.
 

What are the three common entrapment sites in the thoracic outlet?

Illustration of the thoracic outlet showing the 3 common sites of vascular compression: scalene triangle, costoclavicular space, and pectoralis minor space. The subclavian artery is most commonly compressed in the scalene triangle with the presence of an accessory cervical rib, leading to arterial TOS (A).

What does TOS pain feel like?

What does thoracic outlet pain feel like? Thoracic outlet syndrome can cause pain in your neck, upper chest, shoulder and arm. This may feel like a dull ache, and it may worsen when you move your arms. Some people confuse thoracic outlet syndrome pain with angina.

Does TOS show up on MRI?

MRI identified a structure potentially responsible for TOS in 34 (71%) patients; thus, the false-negative rate was 14/48 (29%). The sensitivity of MRI was 28% for compression at the suspensory ligament of the pleural dome, 81% for hypertrophy of the anterior scalene muscle, and 50% for an accessory scalene muscle.

What type of doctor treats thoracic outlet syndrome?

A surgeon trained in chest surgery, known as a thoracic surgeon, or blood vessel surgery, known as a vascular surgeon, typically does the procedure. Thoracic outlet syndrome surgery has risks of complications, such as injury to the nerves, known as the brachial plexus.

What kind of pillow is best for thoracic outlet syndrome?

Contour pillows are designed to support the natural curve of your neck. They're often made of memory foam and have a dip in the middle for your head and a raised area for your neck. This can help keep your spine aligned and reduce pressure on the thoracic outlet.

What are the symptoms of a pinched nerve in the thoracic spine?

Common symptoms of thoracic nerve compression may include:

Muscle spasms and changes in posture in response to the injury. Loss of motion, such as inability to bend backward or sideways or turn the body. Poor tolerance for sitting. Muscle weakness that can lead to muscle atrophy.

Can you have multiple types of thoracic outlet syndrome?

Yes! One patient can have multiple types of thoracic outlet syndrome at the same time. As shown above, the artery, vein, and brachial plexus pass through each thoracic outlet together. Thus, a patient can have compression of 1, 2, or all 3 of these vital structures.

Does TOS show up on EMG?

TOS affects brachial plexus nerves and EMG should be able to detect the damage.

What nerve does TOS affect?

Neurogenic thoracic outlet syndrome.

This is the most common type of thoracic outlet syndrome. In this type, a group of nerves called the brachial plexus is compressed. The nerves of the brachial plexus come from the spinal cord. The nerves control muscle movements and feeling in the shoulder, arm and hand.

Is TOS a permanent condition?

Although many cases of thoracic outlet syndrome (TOS) are unpreventable, the condition is treatable. If left untreated, TOS can cause complications, such as: Permanent arm swelling and pain (especially in patients with venous TOS)

Can a CT scan show thoracic outlet syndrome?

Imaging with ultrasound, contrast-enhanced CT, MRI or conventional angiography is useful for detecting vascular thoracic outlet syndrome (e.g. arterial and/or venous compression). Imaging is performed with the patient's arms both in the raised (abducted) and neutral (adducted) positions for comparison.

Can TOS affect the legs?

Lesser recognized symptoms of TOS venous obstruction are neck pain, pain in the hip, groin, and low back, with radicular pain in the leg and feet, reflecting the proximity of the dilated plexus to the disks and spinal nerve roots.

How does a neurologist rule out MS?

Tests used to diagnose MS may include: MRI, which can reveal areas of MS on the brain and spinal cord. These areas are called lesions. A contrast dye may be given through an IV to highlight lesions that show the disease is in an active phase.

What is MS tongue symptoms?

Some people with MS lose sensation in their tongue. Some health care providers refer to MS-related tongue issues as “MS tongue.” Loss of sensation or numbness can make it difficult to move your tongue when you speak, chew, or swallow. Tongue numbness may also diminish sense of taste.

What are common MS walking problems?

Balance and walking problems vary considerably depending on the person and may include: Tripping, stumbling or falling. Unsteadiness when walking or turning. Needing support from walls, furniture or other people.