Barrquinn, 3 week is usually the mark to begin PT for most fusions. It helps strengthen the needed muscles as well as insuring to get oxygen rich blood to the fusion. Yes, it can be a little painful but is definitely needed. As far as Chiropractors, I’ve never used one. Just IMO they always say “ you need an adjustment “. They use a simple AP or lateral X-ray which does not show nerves, cord impingements etc..etc…David