Suggest Medication For Ankle Joint Pain At The Calceneum Bone Region

Hello Doctor, My father is recently suffering from ankle joint pain at the calcaneum bone region for past 6 months.He already had a fracture at that place 10 years ago.On consultation along with the X-ray report of that portion Dr suggested no bone defect.His uric acid level is normal too.His pain is such severe that he even couldn t walk .Now after some medication he is able to walk with a stick but complete cure has not occurred. Can you suggest whether it can be a case of neurology?