I fractured my ankle and fibula 6 months ago, they were not big fracturs just small cracks, i had my leg in cast for 4 weeks but still have occasional pain. my problem is while walking 2 days ago my leg gave way and it felt like my ankle twisted a little now i'm getting pain in my ankle and up my leg it eases occasionally but then within 10-20 mins the pain is back again and sometimes feels like its burning, i can walk on it but it is painful i have taken pain killers but they do not seem to be helping, any ideas please.