I am praying for you as I have been down that road. My father had a stroke which left him paralyzed on the right side and unable to speak for 13 yrs. The last year he developed a sore on his right ankle that would not heal. Like your father Dad's circulation was an issue. The Drs. tried so many things to help it improve with no success. The time finally came when he started getting gangreen that amputation was needed. They ended up having to remove his lower leg but to our surprise Dad handled it so very well. I hope you don't come to that but if you do it may be for the best. That older generation is a tough bunch and manage things better than we do.