Inflammation on the bursa behind the heel is known as Retrocalcaneal Bursitis. Repetitive force or friction over the back again with the heel causes the bursa to swell resulting in heel pain and tenderness, swelling and ankle stiffness. Normally related to Achilles Tendonitis and Haglunds Deformity.   Swelling and redness of https://www.theorthopaedicandpainpractice.com/the-definitive-guide-to-diagnosing-and-treating-ankle-pain-in-singapore/