on that bottom link-
I thought this was interesting.

[A cervical rib occurs in 1% of people in the general population; 7 types of cervical bands have been described. The most frequent is the type III band extending from the neck to the scalene tubercle of the first rib, crossing the concavity of the rib. Another frequent finding is a thickened medial edge of middle scalene muscle acting as a chopper for the lower BP elements (5).]

and this
[Therapeutic Management:
1/ Conservative: General measures include reduction of weight and proper breast support when indicated. Medications such as muscle relaxants and tranquilizers or antiinflammatory drugs can help some patients. The key point of the treatment is an individually tailored physical therapy program (7,9). The patient should be examined by a physical therapist well aware of the TOS pathology. The physician will prescribe a 3 to 6-week program including postural correction, stretching exercises of some muscles and stengthening exercises of others. More than half of the patients will significantly improve under this therapeutic regimen (9); if so, the patient must be encouraged to continue a home-exercise program on a long-term basis. ]

good article.