Grade: 1
Not really a sprain. Maybe arthritis or bursitis? Or something in the joint - not in the tendons. Loose cartilage? I think I have had this before and it eventually resolves itself. No swelling, no point tenderness. Hurts when ankle is bent forward at a particular angle and weight is on it. Otherwise no problem. The worst situation is going downstairs - otherwise no real handicap.
Just waited it out.