Heel Spur Fix. Generally, a heel spur is a foot condition that’s created by a bony-like growth, called a calcium deposit, that extends between your heel bone and arch. Secondly, heel spurs often start in the front of and underneath your heel. They eventually affect other parts of your foot. They can get upto half an inch in length. However, they may not necessarily be visible to the naked eye. If you have been experiencing very sharp on your heel,most likely you have the heel spur or it is developing.