Look up posts by pianoplayer. She had similar issues/plan by MD. There were some specific links in one of those threads that explain in cases of suspected double or triple crush syndromes the surgeries should always be done from the top (closest to spinal cord) down. Carpal tunnel might not be the problem....that nerve is affected by TOS, so the only compression might be the top one. In that case, 1 surgery might do the trick instead of 3.