What I understood in my family's case, the rib was removed, a scalene, to open the space.
From the truma of the injury; a whiplash type spasm...there are short bands from the neck to the collarbone that support the neck...

The doctor, noted that one of the bands was first noticed in the surgery in the area of the armpit caught in a muscle spasm. It was detached and snaked up into the body....it was next found during the second part where the area along the collar bone as opened to detach the rib from the spine area....

It was here he found the other end, it was measured at only 1 1/2 inches long.
THat was a long stretch...

BUT also, a gortex material was wrapped around each of the vessels to protect them from future scarring or injury.
When symptoms returned, a redo clean up was done. During this proceedure it was found that the scar matter (adhisions) had just spider webbed around all the vessels and entaggled itself anyway.

So I am not sure if like running a conduit around these vessels would do more harm then good if the scarring matter is going to grow anyway.
Just my thoughts,
di