Heel spurs are calcium deposits which occur on the underside (Plantar) and rear (posterior) of the heel bone which is called the Calcaneus. They usually occur at the sites of muscular and tendinous insertions on the bone and look like bony protrusions. They are often associated with sports and long term standing, and are often present but cause no pain and in fact any related pain is general caused by the associated soft tissue and not the spur itself.
Symptoms are often described as worse in the morning when first getting out of bed and then easing over the next 5 minutes.
Treatment depends on what has caused them and how long they have existed.