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2015.07.12
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カテゴリ:カテゴリ未分類

Overview
The 2nd toe is the most common digit to develop a Hammertoe deformity. Second toe hammer toes commonly result from an elongated 2nd metatarsal and from pressure due to an excessively abducted great toe (hallux valgus deformity) causing a bunion. Unusually long toes often develop hammer toe deformities. Painful corns often develop in hammer toe deformity, particularly of the 5th toe. Reactive adventitial bursas often develop beneath corns, which may become inflamed.

Causes
Hammertoes are most common in women, and a big part of this is poor shoe choices, which are a big factor in the development of many foot problems. Tight toe boxes and high heels are the biggest culprits. Genetics certainly plays a role in some cases of hammertoes, as does trauma, infection, arthritis, and certain neurological and muscle disorders. But most cases of contracted toes are associated with various biomechanical abnormalities in how a patient walks. This causes the muscles and tendons to be used excessively or improperly, which deforms the toes over time.

Symptoms
Symptoms include sharp pain in the middle of the toe and difficulty straightening the toe. People with hammertoe may also develop blisters, which are fluid-filled pockets of skin, because the bent toe is likely to rub against the inside of a shoe. This increased friction may also lead to calluses, which are areas of thickened skin, and corns, which are hard lumps that may form on or between toes. Symptoms may be minor at first, but they can worsen over time.

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
Pad it. Mild cases of hammertoe can be treated with corn pads or felt pads available in the pharmacy. Toe caps, the small, padded sleeves that fit around the tip of the toe, may relieve hammer toe pain. Change your shoes. Wear wide shoes with resilient soles. Avoid shoes with pointed toes. Exercise. Certain exercises such as moving and stretching your toe gently with your hands and picking small or soft objects such as marbles or towels can keep your toe joints flexible. Also, while you are watching television or reading, you can also put a towel flat under your feet and use your toes to crumple it. This simple exercise can stretch and strengthen your muscles. Use ice. If your hammer toe becomes painful, applying an ice pack several times a day can help relieve the soreness and swelling.
Take medications. Nonsteroidal anti-inflammatory medicines (also called NSAIDs), such as ibuprofen or naproxen may be helpful in minimizing pain and inflammation. Use orthotic devices. Place a custom orthotic device in your shoe. This will help control the muscle/tendon imbalance.

Surgical Treatment
The technique the surgeon applies during the surgery depends on how much flexibility the person's affected toes still retain. If some flexibility has still been preserved in their affected toes, the hammer toes might be corrected through making a small incision into the toe so the surgeon can manipulate the tendon that is forcing the person's toes into a curved position. If, however, the person's toes have become completely rigid, the surgeon might have to do more than re-aligning the person's tendons. Some pieces of bone may have to be removed so the person's toe has the ability to straighten out. If this is the case, some pins are attached onto the person's foot afterwards to fix their bones into place while the injured tissue heals.

Prevention
Some different things you can do to help prevent hammer toes from forming and progressing do exist. You can wear supportive shoes to help prevent deformities. Hammer toes are often times related to poor foot mechanics, particularly foot flattening. You can wear custom orthotics prescribed by a podiatrist; orthotics might prevent or slow the progression of hammer toes. You can also avoid shoes with narrow or pointed toe boxes that can compress your toes.






最終更新日  2015.07.12 22:10:13
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