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Overview
Hammer toes is the general term used to describe an abnormal contraction or "buckling" of the toe because of a partial or complete dislocation of one of the joints of the toe or the joint where the toe joins with the rest of the foot. As the toe becomes deformed, it rubs against the shoe and the irritation causes the body to build up more and thicker skin to help protect the area. The common name for the thicker skin is a corn.

Causes
Hammer toe most frequently results from wearing poorly fitting shoes that can force the toe into a bent position, such as excessively high heels or shoes that are too short or narrow for the foot. Having the toes bent for long periods of time can cause the muscles in them to shorten, resulting in the hammer toe deformity. This is often found in conjunction with bunions or other foot problem (e.g., a bunion can force the big toe to turn inward and push the other toes). It can also be caused by muscle, nerve, or joint damage resulting from conditions such as osteoarthritis, rheumatoid arthritis, stroke, Charcot-Marie-Tooth disease, complex regional pain syndrome or diabetes. Hammer toe can also be found in Friedreich's ataxia.

Symptoms
For some people, a hammer toe is nothing more than an unsightly deformity that detracts from the appearance of the foot. However, discomfort may develop if a corn or callus develops on the end or top of the toe. If pressure and friction continue on the end or top of the toe, a painful ulcer may develop. Discomfort or pain can lead to difficulty walking.

Diagnosis
The exam may reveal a toe in which the near bone of the toe (proximal phalanx) is angled upward and the middle bone of the toe points in the opposite direction (plantar flexed). Toes may appear crooked or rotated. The involved joint may be painful when moved, or stiff. There may be areas of thickened skin (corns or calluses) on top of or between the toes, a callus may also be observed at the tip of the affected toe beneath the toenail. An attempt to passively correct the deformity will help elucidate the best treatment option as the examiner determines whether the toe is still flexible or not. It is advisable to assess palpable pulses, since their presence is associated with a good prognosis for healing after surgery. X-rays will demonstrate the contractures of the involved joints, as well as possible arthritic changes and bone enlargements (exostoses, spurs). X-rays of the involved foot are usually performed in a weight-bearing position.

Non Surgical Treatment
The most common treatment is to wear more comfortable shoes. When choosing a shoe, make sure the toe area is high and broad and has enough room for hammer toes. If there is chronic pain, surgery may be needed to correct a malalignment. Surgical treatments are aimed at loosening up the contracted toe joints to allow them to align properly. Other types of treatment are products designed to relieve hammer toes, such as hammer toe crests and hammer toe splints. These devices will help hold down the hammer toe and provide relief to the forefoot. Gel toe shields and gel toe caps can also be used. Gel toe shields and toe caps will help eliminate friction between the shoe and the toe, while providing comfort and lubrication.

Surgical Treatment
Treatment of a severe hammertoe that has become rigid includes surgery. What is done during the surgery depends on how misshapen and inflexible the toe is. The surgeon may make a cut over your toe and release the tendon by cutting the tendon away from the bone. The surgeon may remove a small piece of bone from the toe. The surgeon may realign the tendons to reposition your toe or fasten the bones with pins. Sometimes the surgeon may have to join the bones in the toe. In this case, you will no longer be able to bend the toe, but the toe will be flat.

Prevention
The best treatment is good prevention! Hammertoe can be prevented by wearing shoes with ample toe room, avoiding high heels, and wearing adjustable shoes to assure a looser fit. When buying shoes, shop at the end of the day when your feet are swollen from daily activity, try both shoes on to confirm they fit properly, and if necessary, visit a shoe repair store to see if they can stretch your shoes for a better fit.