A heel spur is a projection on the bottom of the heel bone caused by a calcium deposit. A heel spur commonly occurs without pain; however, it causes heel discomfort in some instances. According to WebMD, heel spurs are often related to the painful foot condition plantar fasciitis.
Obesity, running or jogging, and wearing worn-out or ill-fitting shoes are all risk factors for heel spurs. The development of a calcium deposit on the heel bone ordinarily happens over a number of months. According to WebMD, some options for treating heel spurs are cortisone injections, orthotics, exercise, anti-inflammatory drugs and surgery.