Breast implants behind muscles causing pain in neck, shoulders and back?

While overly large implants can definitely be the culprit in your shoulder and neck pain, no way to tell if they are causing your other symptoms without removing them and then seeing if the symptoms disappear. So sorry that you are experiencing this.

Breast implanted related illness is a complicated issue.  Through a process of elimination patients have reached the conclusion that they are having many medical issues and don't know what else to do.  I have removed their implants and capsules and they have done better.  Each situation is very different.

There is no accurate way to tell if the pain you are experiencing is related to your implants.  Large implants can cause shoulder and neck pain.  The only real way to tell if the symptoms are related to the implants is to have them removed and see if symptoms improve.