Can a Thoroughbred horse recover from a small fracture in their ankle?

just recued a 3 year old thoroubred from a slauter farm. he fractured his ankle in a race on april 4/08. hes pretty weak (skinny) but getting stronger although his ankle is still swolen and limps. after pulling his lip id i found his bloodlines r linked to seattle slew, pulpit, my charmer,a.p. indy. i love this horse and just want him to be ridable for me. will he ever be sound? can anyone help me out?? i dont want him to be in pain!!!