Overview
Heel spur is a thorn-like, bony protrusion of the heel bone, which can become inflamed through irritation, thus causing pain. A heel spur forms at the tendon attachments on the muscles of the heel bone as a result of micro-injuries to the tissue caused by overstraining. As part of the healing process for these micro-injuries, the body stores bone material in the tendon attachments as a repair mechanism. Heel spurs can develop over a very long period without causing major complaints. However, irritation of the area surrounding the ossified tendon attachment can cause inflammations. Left untreated, the inflammations can in turn lead to increased ossification and thus to permanent degradation with a risk of chronic manifestation. The normal rolling procedure that we all use when walking is then frequently no longer possible.
Causes
An individual with the lower legs angulating inward, a condition called genu valgum or “knock knees,” can have a tendency toward excessive pronation. As a result, this too can lead to a fallen arch resulting in plantar fascitis and heel spurs. Women tend to have more genu valgum than men do. Heel spurs can also result from an abnormally high arch. Other factors leading to heel spurs include a sudden increase in daily activities, an increase in weight, or a change of shoes. Dramatic increase in training intensity or duration may cause plantar fascitis. Shoes that are too flexible in the middle of the arch or shoes that bend before the toe joints will cause an increase in tension in the plantar fascia and possibly lead to heel spurs.
Symptoms
With heel spurs, people often talk about a dull ache which is felt most of the time with episodes of a sharp pain in the center of the heel or on the inside margin of the heel. Often the pain is worse on first rising in the morning and after rest and is aggravated by prolonged weight bearing and thin-soled shoes.
Diagnosis
Diagnosis of a heel spur can be done with an x-ray, which will be able to reveal the bony spur. Normally, it occurs where the plantar fascia connects to the heel bone. When the plantar fascia ligament is pulled excessively it begins to pull away from the heel bone. When this excessive pulling occurs, it causes the body to respond by depositing calcium in the injured area, resulting in the formation of the bone spur. The Plantar fascia ligament is a fibrous band of connective tissue running between the heel bone and the ball of the foot. This structure maintains the arch of the foot and distributes weight along the foot as we walk. However, due to the stress that this ligament must endure, it can easily become damaged which commonly occurs along with heel spurs.
Non Surgical Treatment
In some cases, heel spur pain may not be resolved through conservative treatment options. In those cases, cortisone injections may be used to reduce inflammation associated with the condition, helping to reduce discomfort. However, treatment options such as these must be discussed in detail with your physician, since more serious forms of treatment could yield negative side effects, such as atrophy of the heel’s fat pad, or the rupture of the plantar fascia ligament. Although such side effects are rare, they are potential problems that could deliver added heel pain.
Surgical Treatment
Have surgery if no other treatments work. Before performing surgery, doctors usually give home treatments and improved footwear about a year to work. When nothing else eases the pain, here’s what you need to know about surgical options. Instep plantar fasciotomy. Doctors remove part of the plantar fascia to ease pressure on the nerves in your foot. Endoscopy. This surgery performs the same function as an instep plantar fasciotomy but uses smaller incisions so that you’ll heal faster. However, endoscopy has a higher rate of nerve damage, so consider this before you opt for this option. Be prepared to wear a below-the-knee walking cast to ease the pain of surgery and to speed the healing process. These casts, or “boots,” usually work better than crutches to speed up your recovery time.
Prevention
Heel spurs and plantar fasciitis can only be prevented by treating any underlying associated inflammatory disease.