The cost estimate includes: 1  Costs for local material / equipment delivery to and service provider transportation to and from the job site. 2  Costs to prepare the worksite for Fence Installation, including costs to protect existing structure(s), finishes, materials and components. 3  Costs for job cleanup and debris removal at project completion.
Causes and Risk Factors. The most common cause of thoracic outlet syndrome is pressure on the nerves or blood vessels that go to the arms. Sometimes this pressure is caused by an extra first rib or an old fracture of the clavicle, which makes the space of the thoracic outlet narrower.
The brachial plexus is the nerve bundle responsible for most of the symptoms of Thoracic Outlet Syndrome. The brachial plexus branches off of the spinal cord and passes through an opening in the bones at the side of the spine in the neck. It then passes between a powerful group of muscles called the scalenes.he First Rib. The bottom of the scalenes also attach to the first rib located just behind and below the collarbone. If the scalene muscles become too tight, or out of their normal alignment, they tend to shorten.