My husband is paraplegic and has developed a pressure sore on the left buttock that goes to the bone?

My husband is paraplegic and has developed a pressure sore on the left buttock that goes to the bone. I need to find aa doctor in the Houston or Tyler, TX area that is willing to clean up the bone area and fill in the hole. Can you please help me? I’m having trouble finding one willing to operate on this area of my husband. I am really getting desperate!