Is thoracic outlet syndrome surgery a major surgery?

Yes: It usually involves first and/or cervical rib resection. What makes the surgery major at this point is extent of nerve or vascular compression that patient presents with that will determine further surgical approaches.

Yes: All surgery is major, to one degree or another. Most of the risk can be reduced with preparation, so the experience of the surgeon is important. You do want someone who pays attention to details, and does not treat this like an assembly line procedure. Talk to the operating surgeon and ask questions.

Yes: This is a relatively rare operation that should be done by someone with experience. Results are best when the compression is of an artery or vein, less good for nerve compression. Complications include failure of surgery, damage to nerves and blood vessels to arm, nerve to diaphragm or shoulder muscles and "pneumothorax" (air in the chest). Helpful for the right indications, EXPERIENCE IS KEY