A heel spur, also called calcaneal spur, is a small bone spur on the heel bone and are detectable by x-ray examination. When a foot bone is constantly exposed to stress, calcium is deposited on the bottom of the heel bone.
In general, this would not affect an individual’s daily routine but when deposits build up, a deformity is caused known as a calcaneal spur or heel spur. People who are prone to developing heel spurs are women who wear high heels most of the time, obese people and the flat foot.
An inferior calcaneal spur can be found at the interior part of the heel and is usually associated with plantar fasciitis. Another type of heel spur is posterior calcaneal spur which develops on the back of the heel near the Achilles tendon.