There are approximately 75 different causes of heel pain. At least 80% of all heel pain is due to heel spurs. A heel spur contains calcium, but cannot truly be called a calcium deposit. Bone spurs, whether they are on the heel or on any other bone of the body, are true bone -- they are true enlargements of the bone and may be sharp and pointed, or round and knobby. Since bone spurs are true bone, they contain calcium just like regular bones, but are not pure calcium deposits.
A heel spur is a bony overgrowth on the bottom of your heel bone. The heel spur is usually a result of an inflamed ligament (plantar fascia) on the bottom of the foot that attaches to the heel bone. Constant abnormal pulling of this ligament irritates the heel bone and the body lays down a bone spur as a protective mechanism. The patient usually complains of pain with the first step in the morning, some relief following activity, but returning after extended amounts of time standing or walking.
You may or may not experience any symptoms with your heel spurs. It is normally the irritation and inflammation felt in the tissues around your heel spur that cause discomfort. Heel pain is one of the first things you may notice, especially when pushing off the ball of your foot (stretches the plantar fascia). The pain can get worse over time and tends to be stronger in the morning, subsiding throughout the day; although it does return with increased activity. A sharp, poking pain in your heel that feels like you're stepping on a stone can often be felt while standing or walking. You will sometimes be able to feel a bump on the bottom of your heel, and occasionally bruising may appear.
Heel spurs and plantar fasciitis are diagnosed based on the history of pain and tenderness localized to these areas. They are specifically identified when there is point tenderness at the bottom of the heel, which makes it difficult to walk barefoot on tile or wood floors. X-ray examination of the foot is used to identify the bony prominence (spur) of the heel bone (calcaneus).
Non Surgical Treatment
Elevation of the affected foot and leg at rest may diminish the pain. Applying gentle heat to the painful area may ease the pain by dilating local blood vessels. One also can protect the heel by placing a foam rubber pad in the heel of the shoe. A pad about one-half inch thick will raise the heel, shift the weight of the body forward, and protect the irritated muscles attached to the heel bone. The same effect can be achieved by using adhesive tape to turn the foot inward. Additional treatment may consist of a number of physical therapies, such as diathermy, ultrasound waves and whirlpool baths.
Usually, heel spurs are curable with conservative treatment. If not, heel spurs are curable with surgery, although there is the possibility of them growing back. About 10% of those who continue to see a physician for plantar fascitis have it for more than a year. If there is limited success after approximately one year of conservative treatment, patients are often advised to have surgery.