The first rib is not down in the chest wall as one would think, but is actually closer to the neck and is the base for a group of muscles called the scalenes. The scalenes are important muscles ...

The symptoms are due to scar tissue formation in neck muscles (called scalene muscles). In neurogenic TOS, the symptoms are pain, numbness, tingling, and/or weakness in the arm and hand. Also common ...

The clinician has the patient extend their neck and turn their head to the side ... neurovascular bundle that passes between the anterior scalene and middle scalene muscles. There is some degree ...