Inflammation on the bursa guiding the heel is referred to as Retrocalcaneal Bursitis. Repetitive force or friction around the back again from the heel causes the bursa to swell causing heel pain and tenderness, swelling and ankle stiffness. Generally connected with Achilles Tendonitis and Haglunds Deformity.   Health's written content is https://www.theorthopaedicandpainpractice.com/the-definitive-guide-to-diagnosing-and-treating-ankle-pain-in-singapore/