Retrocalcaneal bursitis is swelling (inflammation) of the fluid-filled sac (bursa) at the back of the heel bone (calcaneus) under the Achilles tendon.
Insertional heel pain
A bursa acts as a cushion and lubricant between tendons and muscles sliding over bone. There are bursas around most large joints in the body, including the ankle.
The retrocalcaneal bursa is located in the back of the ankle by the heel. It is where the large Achilles...Read more