A heel spur, or calcaneal spur, is a bony growth of calcium deposits on the back or bottom of the heel bone that often has a hooked, pointy, or shelf-like shape. Heel spurs develop when strain or ...

A heel spur occurs when a calcium deposit leads to a bony protrusion underneath the heel bone, and they can extend up to a half-inch in length. If there isn't a visible heel spur on the X-ray ...