Inflammation with the bursa guiding the heel is termed Retrocalcaneal Bursitis. Repetitive pressure or friction over the back again from the heel results in the bursa to swell leading to heel pain and tenderness, swelling and ankle stiffness. Frequently related to Achilles Tendonitis and Haglunds Deformity.   Swelling and redness with https://www.theorthopaedicandpainpractice.com/the-definitive-guide-to-diagnosing-and-treating-ankle-pain-in-singapore/