I had a fusion Dec 2011. I've worked hard on recovery! I have 7 titanium screws, bone growth grafs?,. and plate. Last appt. I asked about the pins on xray. They are markers for 2 plastic discs. Didn't know,.clueless. sounds like 2.different procedures. Fusion was done through the front. I'm walking 40 mins a day, resistance training 20 mins 3 x's wk, and pt 25-30 mins a.day. Sunday off. for good.behavior. pressure and pain on mid and upper back is bad. What am I doing wrong?