Heel spurs develop over time; they don’t magically appear.
Repetitive strain on your muscles and ligaments in the foot and heel can lead to a heel spur, a bony buildup of calcium on the heel that can form and cause pain.
There are two types of heel spurs: an inferior calcaneal spur, which results from ongoing stress to the bottom of the heel and grows between the heel and the arch of the foot; and a posterior calcaneal spur, which is the result of repeated trauma to the back of the heel where the Achilles tendon is attached.