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.
(November 2009). Thoracic outlet syndrome (TOS) is a syndrome involving compression at the thoracic inlet, which is known clinically as the superior thoracic outlet resulting from excess pressure placed on a neurovascular bundle passing between the anterior scalene and middle scalene muscles.horacic outlet syndrome (TOS) is a syndrome involving compression at the thoracic inlet, which is known clinically as the superior thoracic outlet resulting from excess pressure placed on a neurovascular bundle passing between the anterior scalene and middle scalene muscles.