I have studied your case history.
You will need X ray
There is possibility of impingement of implant along soft tissue
during ankle movement.
As bone union is complete and implant is producing pain you can remove implant consulting your doctor
Clinical examination is important to know site of pain.
You can also send x ray photo on my profile.
Till time take medication like analgesic
and apply crepe bandage over thigh. Do ice fomentation.After implant removal after few months you can do all sorts of exercises.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
Wishing you good health.