I have had 2 trigger point injections at my left clavicle because the muscles in my neck on that side get so tight it is very painful and makes it difficult to turn my neck to the left. It seems they have helped. I have TOS from a work injury made worse by multiple surgeries at my left clavicle and also a staph infection at that site from the operating room in 2000 leaving me worse off than before all the surgeries! Surgery is not always the answer!