My girlfriend has what I would assume is a medial
A nerve related pain likely.
Thanks for posting your query.
The extreme pain that she is having even after the area has properly healed is suggestive of a nerve damage in the area. Such neural pains are a difficult thing to treat. Regular stretching exercises, supplements like methylcobalamin, local steroid injections and medicines like pregabalin can help her to some extent. You need to consult a neurologist regarding this.
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