A calcaneal spur, or ‘heel spur’, is a pointed bony outgrowth on the heel bone (the calcaneus bone) formed from calcium deposits. Heel spurs can be located at the back of the heel or under the heel, and cause tenderness and pain at the back of the heel made worse while pushing off the ball of the foot. This is particularly common in people who do activities which involve strain on the heel, for example running on hard surfaces or jumping.
Calcaneal Spur
