Overview
The name Hammer toes comes from the way the tip of the toe hits or hammers on the floor with each step. The primary deformity seen in a hammer toe is found at the PIPJ (proximal interphalangeal joint) which is the first or more proximal of the two joints of the toe. A mallet toe, on the other hand, is a similar deformity but is found in the DIPJ (distal interphalangeal joint). And lastly, claw toes are a deformity where the entire toe grabs and involves the MPJ (metatarsal phalangeal joint) PIPJ and DIPJ. Collectively, these deformities are referred to as hammer toes. Hammer toes can affect one or all of the toes simultaneously.
Causes
Hammer toe is often caused by wearing shoes that do not fit properly. If shoes are too small either in length or width, then the toes are held in a shortened position for long periods and the muscles eventually shorten and pull the toes into the bent position. Alternatively it can be caused by overactivity in the extensor digitorum dongus muscle (right) and a weakness in the counteracting muscle under the foot, such as flexor digitorum longus. Sometimes it can be a congenital condition, meaning it is present from birth. It is also more common in those with arthritis in the foot or diabetes.
Symptoms
The most common symptoms of hammertoes include. The toe is bent upward at the middle toe joint, so that the top of this joint rubs against the top of the shoe. The remainder of the toe is bent downward. Pain upon pressure at the top of the bent toe from footwear. The formation of corns on the top of the joint. Redness and swelling at the joint contracture. Restricted or painful motion of the toe joint. Pain in the ball of the foot at the base of the affected toe. This occurs because the contracted digit puts pressure on the metatarsal head creating callouse and pressure on the ball of the foot.
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
Conservative treatment is limited to accommodation, not correction, of the deformity, though some patients find the relief they can get from these options to be more than enough to put off or even avoid surgery. These include better Footwear. Shoe gear with a wider toe box and higher volume causes less friction to the toes. Toe Braces and Strapping. Some toe braces and strapping techniques take some pressure off the toes during gait. Custom molded orthotics can redistribute the forces through the tendons that control the toe, lessening the pain and extent of the deformity.The calluses on the toe and the ball of the foot can be shaved occasionally to reduce some pain and pressure, although they will return due to the constant deformity.
Surgical Treatment
If you are unable to flex your toe, surgery is the only option to restore movement. Surgery is used to reposition the toe, remove deformed or injured bone, and realign your tendons. Surgery is normally done on an outpatient basis, so you can return home on the day of your surgery.
Prevention
Few people realize that their feet grow over the years: actually, the heel stays the same, but the front of the foot becomes wider and longer. The result, most women wear shoes that fit at the heel but are much too narrow in the front. Buy shoes that fit the longer foot. For two out of three people, one foot is significantly bigger than the other. Have both feet measured whenever you buy shoes. Have your feet measured while you're standing, and buy shoes that fit the larger foot. Shop at the end of the day, when foot swelling is greatest. No shoe should feel tight. Don't go by numbers. You may think of yourself as a size 8B, but size varies from shoe to shoe. There is no standardization, so pick the shoes that fit best. Limit high-heel use. These shoes increase pressure on the front of the foot by at least 50 percent, so wear them only for special occasions. Flat shoes are more comfortable than high heels, but they, too, can be hard on your feet, especially if they are thin-soled. Change your shoes. If your shoes are too short or too narrow, get another pair. This is especially important for children going through periods of rapid growth. The toe area should be high enough so that it doesn't rub against the top of your toes-especially if hammer toes have started to develop.
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