Humerous fracture

I was humerus middle shaft fracture in 15th June 2017. next day surgery my right humerus for fixation of plate and screw. But after 3 month plate was not holding properly and plate was all most outside the bone but healing not properly. So I change the doctor and place. Doctor advise removal of plate and extensible higher or large plate or bone grafting. In April 27th again surgery but this time doctor fix of rod Nail syntheses. But present time pain in my right hand and not proper healing. Please intimate me what I can do