The calcaneus is the largest bone in the foot. Pain in the heel region can sometimes be related to Plantar Fasciitis, inflammation of the plantar fascia ligament in the heel area. A heel spur is a hook of bone that forms on the calcaneus where the plantar fascia attaches. Heel spurs can be identified with an X-ray. A heel spur can occur with or without Plantar Fasciitis.
A strong band of sinew (plantar fascia) stretches across the sole of the foot below the surface of the skin and is attached to a point in the middle of the under surface of the heel bone. With repeated activity on our feet, the plantar fascia can become tight and cause persistent traction (tugging) on its attachment point into the heel bone, and inflammation and pain may develop at this site. This painful condition is known as plantar fasciitis. Sometimes a ?spur? develops at the site of this traction on the bone and protrudes into the surrounding tissue. This is a heel spur.
The pain caused by a calcaneal spur is not the result of the pressure of weight on the point of the spur, but results from inflammation around the tendons where they attach to the heel bone. You might expect the pain to increase as you walk on the spur, but actually it decreases. The pain is most severe when you start to walk after a rest. The nerves and capillaries adapt themselves to the situation as you walk. When you rest, the nerves and capillaries rest, also. Then, as you begin to move about again, extreme demands are made on the blood vessels and nerves, which will cause pain until they again adjust to the spur. If excessive strain has been placed on the foot the day before, the pain may also be greater. A sudden strain, as might be produced by leaping or jumping, can also increase the pain. The pain might be localized at first, but continued walking and standing will soon cause the entire heel to become tender and painful.
Because the diagnosis of heel spurs can be confused with tarsal tunnel syndrome (as described earlier), most surgeons advocate performing a tarsal tunnel release (or at least a partial tarsal tunnel release) along with the plantar fascia release. This surgery is about 80percent successful in relieving pain in the small group of patients who do not improve with conservative treatments.
Non Surgical Treatment
FIRST, Reduce the acute pain. This is done by a combination of several things; injection of a synthetic relative of cortisone into the heel, a prescription of anti-inflammatory pills to reduce inflammation, physical therapy and a special heel pad. About 50% of the time, these treatments will permanently relieve the pain. In the other 50%, the pain becomes recurrent, and the treatment proceeds to Stage II. SECOND, Recurrent, painful heel spur is caused by the tug and pull of the plantar fascia ligament on the heel bone with each step. When the pain is recurrent, arch supports are made to prevent sagging of the arch. The arch supports are custom-made according to the size and shape of the feet. This prevents the arch from sagging and the ligament from tugging and pulling on the heel bone. The inflammation and pain eventually go away as the first phase of treatment is continued along with the arch supports, although the spur itself remains. THIRD, Surgery to remove the spur is possible and is usually done as Day Surgery.
Surgery involves releasing a part of the plantar fascia from its insertion in the heel bone, as well as removing the spur. Many times during the procedure, pinched nerves (neuromas), adding to the pain, are found and removed. Often, an inflamed sac of fluid call an accessory or adventitious bursa is found under the heel spur, and it is removed as well. Postoperative recovery is usually a slipper cast and minimal weight bearing for a period of 3-4 weeks. On some occasions, a removable short-leg walking boot is used or a below knee cast applied.