In reply to RdC:
The Brostrum repair works very well , allowing full return to sport.
Did the burning go away after the op and then return? Has it never changed?
Could be nerve irritation, bone bruising...many things. You need to raise it with the surgeon or your physio. If this was all done via the NHS it may take some time to talk to anyone, but the surgeon is the best person to ask, he was inside your ankle so should know what was damaged and give you input on healing times.
Usually 3 months to be fair ( it will still ache a bit and walking distances will be limited by discomfort and swelling) and 6 months to be good (you can walk loads, minimal ankle discomfort and swelling after exercise) and starting rehab for sport. All cases have limitations particular to the amount of damage, age etc.
Good Luck, they usually respond well although I would take football of the menu due to risk of re injury, and your balance will never be 100% after this type of heave injury and repair but will be good enough for anything sub Olympic level.