Hammer Toe

A hammer toe is a toe that becomes permanently bent in the middle so that the end of the toe points downward. The portion of the toe before the joint where the bend occurs tends to arch upward.

A hammer toe takes years to develop. Once the toe becomes permanently bent, corns or calluses may form. Treatment helps control symptoms in many people, but surgery is sometimes needed to straighten the toe.

Causes

Wearing ill-fitting shoes is probably the main cause of hammer toe. As the toe bends, tendons add to the problem by contracting in such a way that the bending is reinforced to the point of becoming permanent. In some cases, tendons that are abnormal to begin with may start the bending process.

Symptoms and Diagnosis

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.

Treatment

People with a hammer toe benefit from wearing shoes in which the toe box is made of a flexible material and is wide enough and high enough to provide adequate room for the toes. High-heeled shoes should be avoided, because they tend to force the toes into a narrow, flat toe box. A doctor may recommend an insert (orthotic) for the shoe to help reduce friction and pressure on the hammer toe. Wearing properly fitted shoes may reduce pain and inflammation. It may also prevent ulcers from developing and help existing ulcers heal. However, the hammer toe does not disappear.

Surgery to straighten the toe may be needed if an ulcer has formed on either the end or the top surface of the toe. Surgery sometimes involves cutting the tendons that support movement in the toe so that the toe can be straightened. Cutting the tendons, however, takes away the ability to bend the very end of the toe. Another type of surgery combines temporary insertion of a pin or rod into the toe and alteration or repair of the tendons, so that the toe is straightened. After surgery, the deformity rarely recurs.