At the back of the ankle, the Achilles tendon attaches to the heel bone. To prevent the tendon from rubbing on the bone, there is a small sac of fluid (called a bursa) in between the tendon and the bone. Occasionally, if there is too much pressure over this area, the bursa may become inflamed and the area can get quite painful. This is called “Bursitis” (inflammation of the bursa). The term ‘retro-Calcaneal’ just means “behind the heel bone”.
Common causes of this include:
- Tight calf muscles.
- Shoes that are too small.
- Repetitive trauma.
- An unusual lump on the heel bone (Haglund deformity).