ChristyTelladoのブログ

Overview
A Hammertoe 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
Shoes that narrow toward the toe may make your forefoot look smaller. But they also push the smaller toes into a flexed (bent) position. The toes rub against the shoe, leading to the formation of corns and calluses, which further aggravate the condition. A higher heel forces the foot down and squishes the toes against the shoe, increasing the pressure and the bend in the toe. Eventually, the toe muscles become unable to straighten the toe, even when there is no confining shoe.

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
Hammer toes may be effectively corrected in different ways. Treatments can be non-invasive and involve physical therapy along with the advice that the person not wear any more shoes that restrict appropriate space for their toes. Appropriate shoes for people who want to avoid hammer toes, or for people who already have them, should be at least half an inch longer than the person's longest toe. High-heeled shoes are something to definitely avoid.

Surgical Treatment
There are several surgical methods to correct a hammer toe. Your physician will decide which method will be most beneficial to you depending on the severity of your deformity, the direction the toe is deviating and the length of the affected toe. Some common surgical methods include. Arthroplasty. To promote straightening, half of the joint located directly underneath the crooked part of the toe is removed. Arthrodesis (fusion) To promote straightening, the joint directly underneath where the toe is crooked is completely removed. A wire or pin is inserted to aid healing. Tendon transfer. Performed alone or in combination with other procedures, a surgeon will take tendons from under the toe and ?re-route? them to the top of the toe to promote straightening. Basal phalangectomy. Performed to assist patients with severe stiffness, this procedure removes the base of the bone underneath the toe. Weil osteotomy. Performed to assist patients with severe stiffness, this procedure involves shortening the metatarsal bone and inserting surgical hardware to aid healing.