Thoracic Outlet Syndrome - Scalenes and Pec Minor Treatment
Thoracic Outlet Syndrome - Trigger Point Release
Thoracic outlet syndrome (TOS) is a group of disorders that occur when blood vessels or nerves in the space between your collarbone and your first rib (thoracic outlet) are compressed. This can cause pain in your shoulders and neck and numbness in your fingers
Common causes of thoracic outlet syndrome can include trauma (sports injury, auto accident), work related repetitive stress type injuries, and certain anatomical issues such as pregnancy or having an additional rib. TOS is often difficult to diagnose and the cause may also be hard to detect in many cases.
Treatment for thoracic outlet syndrome usually involves a combination of soft tissue therapy, trigger point therapy, physical therapy and other pain relief measures that your doctor or medical practitioner may prescribe.
Most people will respond well to established manual therapy techniques. Trigger points are involved in most cases and these are typically accessible and quite easily treated.
In some cases where patients do not respond to these treatment therapies, surgery may be advised.
TOS occurs when nerves and/or blood vessels become compressed in their passageway through the thoracic outlet which sits between your collarbone and first rib.
The thoracic outlet is surrounded by bone, muscle and other tissues. Movement or enlargement of these tissues near the thoracic outlet as a result of conditions such as cervical rib, tumors in the chest, muscle enlargement and weight gain, may lead to TOS.
These conditions may cause the collarbone to slip putting pressure on the blood vessels and nerves that sit underneath it leading to TOS.
TOS is one of a group of conditions that cause pain into the arm hand and fingers.
Not everyone is too aware of TOS and it's not unusual for clients to work their way through a number of visits to doctors and therapists by the time they receive a confirmed TOS diagnosis.
Types of TOS
The symptoms of TOS can be really disturbing and cause much anxiety (which doesn’t help).
There are generally two types of TOS – one is an unmistakable blockage pressure (organic) to the nerves or blood supply and the other is a functional or temporary pressure issue.
This functional group tends to respond very well to trigger point self-help techniques.
That’s because functional TOS results from a combination of poor rib mechanics and tight muscles (especially the Scalenes and Pectoralis Minor) that cause pressure on the neurovascular structures (sometimes called a myogenic plexopathy).
What Are the Symptoms of TOS?
This will depend on the blood vessels or nerves that are compressed. It is more common to have symptoms from nerve compression than from blood vessel compression.
- Both types of compression may make overhead activities difficult.- Discoloration or swelling in your arm.
- Depression in your shoulder.
- Limited range of motion.
- Redness or swelling of the arm due to a reduction in the blood flow from pressure on the blood vessels. Symptoms may also be felt in the arm and hand.
- A dull ache from nerve pressure may be felt in the hand, arm, shoulder or neck. Tingling, pain or numbness may also be felt on the inside of the forearm and 4th and 5th fingers . The hand may feel clumsy.
Who is Prone to TOS?
- Physically active, younger adults whose occupations involve repetitive raising of the arms e.g. machine operators, truck drivers and dental workers- Those born with an extra rib (known as cervical rib)
- Those with deformity resulting from a fracture to the first rib or collarbone
- Older people - sagging of the shoulder
Differential Diagnosis - What Else Could It Be?
Here is a list of other conditions which can present as thoracic outlet syndrome; some of them can be serious, so if you are concerned please check with your doctor or therapist:
Extra cervical rib or ligamentous (false) rib
Brachial plexopathy – infective or traumatic
So tissue damage (from a whiplash)
Heart attack (le side)
Vertebral artery disease or aneurism
Hyperkyphosis or scoliosis of the thoracic spine
Neck degenerative changes, cervical bars and osteophytes
Complex Regional Pain Syndrome 1(CRPS1) - RSD
Problems (age related) with the neck including discs and spinal joints
TOS and Trigger Point Therapy
Trigger points can develop in muscles for a number of reasons especially overuse.
When present, trigger points cause the host muscle to be shorter, tighter and tenser and they also add to the cycle of increased input to the peripheral and central nervous system.
With TOS, the results of trigger point therapy can be startlingly fast; will almost always provide relief; and accelerate well being.
As is usually the case with trigger point therapy, the hands-on treatment is likely to be most effective when combined with correct stretching and strengthening exercises.
When treating TOS, these typically include neck stretching, ulnar glides, upper trapezius and pectoralis stretching, back mobilization, and rhomboid strengthening.
Self treatment with pressure tools can also be very effective. See examples below:
Self Help - Subclavius
Self Help - Infraspinatus
Self Help - Infraspinatus
Self Help - Pectoralis Minor
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