What Causes Hammer Toes

Overview

A hammertoe or contracted toe is a deformity of the proximal interphalangeal joint of the second, third, or fourth toe causing it to be permanently bent, resembling a hammer. Mallet toe is a similar condition affecting the distal interphalangeal joint.

Causes

The main cause of hammer toe is poorly fitted and/or poorly designed footwear. Any footwear that is too tight in the toe box, especially high-heeled shoes, can push the toes forward, crowding one or more of them into a space that is not large enough to allow the toes to lie flat and spread as they should. Other causes include the following. Changes in foot anatomy. Sometimes the metatarsal bones in the ball of the foot can ?drop,? creating a situation in which the toes do not make contact with the surface of the shoe. The toes may then contract at one or both of the joints to re-establish contact with the surface. Traumatic injuries in which toes are jammed or broken. Diabetic neuropathy. This can cause abnormal foot biomechanics due to nerve and/or muscle damage. Damage to nerves and muscles from other conditions, such as arthritis or stroke. Heredity.

Symptoms

Symptoms of a hammertoe are usually first noticed as a corn on the top of the toe or at the tip which produces pain with walking or wearing tight shoes. Most people feel a corn is due to a skin problem on their toes, which in fact, it is protecting the underlying bone deformity. A corn on the toe is sometimes referred to as a heloma dura or heloma durum, meaning hard corn. This is most common at the level of the affected joint due to continuous friction of the deformity against your shoes.

Diagnosis

Although hammertoes are readily apparent, to arrive at a diagnosis the foot and ankle surgeon will obtain a thorough history of your symptoms and examine your foot. During the physical examination, the doctor may attempt to reproduce your symptoms by manipulating your foot and will study the contractures of the toes. In addition, the foot and ankle surgeon may take x-rays to determine the degree of the deformities and assess any changes that may have occurred.

Non Surgical Treatment

Padding and Taping. Often this is the first step in a treatment plan. Padding the hammertoe prominence minimizes pain and allows the patient to continue a normal, active life. Taping may change the imbalance around the toes and thus relieve the stress and pain. Medication. Anti-inflammatory drugs and cortisone injections can be prescribed to ease acute pain and inflammation caused by the joint deformity. Orthotic Devices. Custom shoe inserts made by your podiatrist may be useful in controlling foot function. An orthotic device may reduce symptoms and prevent the worsening of the hammertoe deformity.

Surgical Treatment

If your toe is not bendable, your doctor may recommend surgery. The type of surgery that will be performed will depend on the severity of the condition. You should expect blood and urine studies before the procedure, as well as x-rays of your feet. Your doctor will inject either a local or regional anesthetic. If your toe has some flexibility, the doctor may be able to straighten Hammer toes it by simply making an incision in the toe to release or lengthen the tendon. If the toe is not flexible, your doctor will probably make the same incision to release the tendon, but he or she may also remove some pieces of the bone so that the bone can be straightened. A k-wire is placed in the toe to help hold it straight while it is healing. This is taken out after about four weeks.