4 Years Ago I Had A Work Related Injury To

4 years ago I had a work related injury to my head, back, buttocks, and left ankle. My left ankle has swollen every day since and none of the doctors have given me an answer to what causes it. It never did that before the accident. I have also told them that the left leg sometimes above the ankle seems to sink in, still no one can answer why. Hopefully you can.