Swollen ankle 5 years after sprain. still painful. why doesn't it heal?

Seek medical care : You pose a very good question why hasn’t it healed. You have given it five years and no relief. Seek medical attention and have appropriate x-rays and examination taken

Couple reasons?: You could have suffered a small stress fracture which has not healed. There may be a complication called CRPS, (complex regional stress syndrome). Perhaps a tendon tear and scarring? Can assess by using triple phase bone scan, thermogram, QSART study. See a physiatrist, and uncover answers.