Inflammation with the bursa at the rear of the heel known as Retrocalcaneal Bursitis. Repetitive strain or friction over the again of the heel will cause the bursa to swell leading to heel pain and tenderness, swelling and ankle stiffness. Usually related to Achilles Tendonitis and Haglunds Deformity.   A Serious https://www.theorthopaedicandpainpractice.com/the-definitive-guide-to-diagnosing-and-treating-ankle-pain-in-singapore/