Thresa Bauswell

The Globe's Premier Foot Blog Site

Causes Hammertoe Deformity

Hammer ToeOverview

The smallest four toes of each foot have three bony segments connected by two joints, just as the fingers do. hammertoes is a deformity in which one or more of the small toes develops a bend at the joint between the first and second segments so that the tip of the toe turns downward, making it looks like a hammer or claw. The second toe is affected most often.

Causes

Hammertoe is caused when muscles fail to work in a balanced manner hammertoes and the toe joints bend to form the hammertoe shape. If they remain in this position, the muscles and tendons supporting them tighten and stay that way. Causes of hammertoe can include squeezing into a too-small or ill-fitting shoe or wearing high heels that jam your toes into a tight toe box. An injury such as badly stubbing your toe. Arthritis. Nerve and muscle damage from diseases such as diabetes,

Hammer ToeSymptoms

The symptoms of hammertoe are progressive, meaning that they get worse over time. Hammertoe causes the middle joint on the second, third, fourth, or fifth toes to bend. The affected toe may be painful or irritated, especially when you wear shoes. Areas of thickened skin (corns) may develop between, on top of, or at the end of your toes. Thickened skin (calluses) may also appear on the bottom of your toe or the ball of your foot. It may be difficult to find a pair of shoes that is comfortable to wear.

Diagnosis

First push up on the bottom of the metatarsal head associated with the affected toe and see if the toe straightens out. If it does, then an orthotic could correct the problem, usually with a metatarsal pad. If the toe does not straighten out when the metatarsal head is pushed up, then that indicates that contracture in the capsule and ligaments (capsule contracts because the joint was in the wrong position for too long) of the MTP joint has set in and surgery is required. Orthotics are generally required post-surgically.

Non Surgical Treatment

The most common treatment is to wear more comfortable shoes. When choosing a shoe, make sure the toe area is high and broad and has enough room for hammer toes. If there is chronic pain, surgery may be needed to correct a malalignment. Surgical treatments are aimed at loosening up the contracted toe joints to allow them to align properly. Other types of treatment are products designed to relieve hammer toes, such as hammer toe crests and hammer toe splints. These devices will help hold down the hammer toe and provide relief to the forefoot. Gel toe shields and gel toe caps can also be used. Gel toe shields and toe caps will help eliminate friction between the shoe and the toe, while providing comfort and lubrication.

Surgical Treatment

Surgical correction is necessary in more severe cases and may consist of removing a bone spur (exostectomy) removing the enlarged bone and straightening the toe (arthroplasty), sometimes with internal fixation using a pin to realign the toe; shortening a long metatarsal bone (osteotomy) fusing the toe joint and then straightening the toe (arthrodesis) or simple tendon lengthening and capsule release in milder, flexible hammertoes (tenotomy and capsulotomy). The procedure chosen depends in part on how flexible the hammertoe is.