A bone spur is an extra bone growth. It can make walking and wearing shoes painful. Spurs may grow on any of the foot joints. These spurs may form a bump on the top of the foot. Bone spurs may also form on your toe. Sometimes, a spur can form where the Achilles tendon connects to the heel bone. There are several nonsurgical treatments for bone spurs. But if these aren't effective, surgery can be considered.