how much i can expect for severe knee injury by a road traffic accident.?

This head on collision (RTA) happened on 12/8/07 in Inverness, Scotland, UK and I was the restrained driver. Police and Ambulance came shortly. The other driver took the liability. My knee patella was broken badly. Consequently I never ever can bend my knee more than 45 degree. I cannot kneel down. I have to walk slowly. I cannot wear my socks my self! According to doctor they may go for another surgery within 8/9 months. Also they warned me in my old age I may suffer from Arthritis. I am also suffering from back pain. However I am not UK citizen. So after one year I have to leave UK. In my country we don’t have enough facility for knee treatment and probably have to travel another country for better treatment. Will the other insurance company consider this and pay extra since I am from Bangladesh? Thanks in advance for your comment.