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.
True neurogenic thoracic outlet syndrome is caused by a compression of the nerves in the brachial plexus. Abnormal muscle or other tissue causes the problem. Arterial thoracic outlet syndrome is caused by compression of the major artery leading to the arm, usually by a rib.