dont give up hope mate,my dog broke its leg badly at 11 months,after a lot of metal work and rest (6 months)he came back and done his job very well.2 years later he hit a brand new fence full throttle.he was paralised for 2 1|2 weeks.his spine was badly bruised from head to tail.he came back and done his job well again.BUT as he had stopped breathing for about a minute,every now and again he threw a little wobble on the turn and was starting to get aggressive.but i am convinced this was down to the lack of oxygen to the brain,but phisically he came back and was still the most game dog for runn