Condition summary:
Sprained left ankle for a year and a half. Ligament injury, synovitis with effusion

Condition Description:
Female, 34 years old. Left ankle sprain nearly a year and a half (in September 2015 when walking) has not healed yet. Applied bandage for a week after the injury but continued commuting without no long-term rest. Now I can still feel pain and instability inside the ankle. My latest MRI test indicates ligament injury, synovitis with effusion etc. (see the uploaded MR films please) Have taken anti-inflammatory medicine and several external use of ointment, feeling no significant effect.
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I Hope the doctor could help me in:
My condition dragged on for a long time. Both internal and external use have been tried. So far there are still discomfort walking, let alone doing sports. Some physicians I visited in person recommend taking glucosamine sulfate capsules, while some recommend of physiotherapy, even arthroscopy surgery, making it hard to decide which one to follow. Therefore, I would truly appreciate your opinion on the optimal treatment for this situation.