Recovery from an ankle sprain can take a variable period of
time, depending on its initial severity, presence or absence of pre-existing
ankle abnormalities, treatment applied in the early stages of the injury,
etc. Without specifically examining your ankle and understanding exactly
what happened and what the extent of the injury was, it is impossible to
advise you as to whether your ankle is behaving as one might expect, or
whether there is something complicated going on.
Ankle sprains are often neglected, since they usually become
pain-free and functionally "normal" in 3-4 weeks. That does not necessarily
mean they have healed properly, and the most important cause of recurrent
ankle sprains and the feeling that one's ankle is "weak" is that the initial
sprain is not adequately rehabilitated.
For some activities, ankle braces or supports are useful
preventive measures, especially for people who have had previous sprains.
Most ski boots are quite supportive in and of themselves. Wrapping an ankle
inside a well-fitted ski boot may disrupt the normal fit of the boot, so may
not be either appropriate or necessary.
I hope some of this has been helpful... If you have
specific questions about YOUR ankle, I would suggest consultation with a
sports medicine physician, Dr. Howe, at the Student Health Center.