Costoclavicular Syndrome

What is a Costoclavicular Syndrome? Costoclavicular syndrome, also known as thoracic outlet syndrome (TOS), is a condition characterized by the compression or irritation of the nerves, blood vessels, or both in the thoracic outlet area. The thoracic outlet refers to the space between your collarbone (clavicle) and your first rib. The superior thoracic outlet and…