Hi thanks for the query
From the complaints you had described you must have had pretty bad ankle sprain
. In the initial stages of injury
your ankle should have been immobilised in plaster or splint
. At present the complains are related to unstable ankle which is the result of your old injury. At present I advice you to visit your Orthopedician and get an X-ray along with MRI
scan who can advice you regarding further treatment. Regarding the boot you had during the injury I advice you to get new one which can support your ankle.