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.
Hammer toe may also be caused by other medical conditions such as rheumatoid arthritis, osteoarthritis, or stroke because these forms of illnesses involve affectation of the person's muscles and nerves. Diabetes is also a causative factor for hammer toes due to diabetic neuropathy, which often times accompanies advanced instances of diabetes. Injury to a person's toes may also cause hammer toes, particularly if the injury involves breaking of the toes. In some instances, hammer toes may be hereditary. Some people may be genetically predisposed to develop the condition because of the natural structure of their bodies.
The middle joint of the toe is bent. The end part of the toe bends down into a claw-like deformity. At first, you may be able to move and straighten the toe. Over time, you will no longer be able to move the toe. It will be painful. A corn often forms on the top of the toe. A callus is found on the sole of the foot. Walking or wearing shoes can be painful.
Your doctor is very likely to be able to diagnose your hammertoe simply by examining your foot. Even before that, he or she will probably ask about your family and personal medical history and evaluate your gait as you walk and the types of shoes you wear. You'll be asked about your symptoms, when they started and when they occur. You may also be asked to flex your toe so that your doctor can get an idea of your range of motion. He or she may order x-rays in order to better define your deformity.
Non Surgical Treatment
People with a hammer toe benefit from wearing shoes in which the toe box is made of a flexible material and is wide enough and high enough to provide adequate room for the toes. High-heeled shoes should be avoided, because they tend to force the toes into a narrow, flat toe box. A doctor may recommend an insert (orthotic) for the shoe to help reduce friction and pressure on the hammer toe. Wearing properly fitted shoes may reduce pain and inflammation. It may also prevent ulcers from developing and help existing ulcers heal. However, the hammer toe does not disappear.
Surgery is the approach that is often necessary to correct hammertoe that fails to respond to nonsurgical management. Surgery is appropriate when the muscles and tendons involved in a hammertoe problem have become so tight that the joints are rigid, misaligned and unmovable. There are a number of surgical techniques for dealing with the complex range of joint, bone, muscle, tendon and ligament abnormalities that define each hammertoe's make-up. To correct a hammertoe deformity, the surgeon's goal is to restore the normal alignment of the toe joint, relieving the pressure that led to the hammertoe's development (this should also relieve the pain, as well). To do this, he or she may remove part of the boney structure that creates a prominence at the top of the joint. Tighten or loosen the muscles, tendons and ligaments around the toe joints. Realign the toe bones by cutting one or more and shifting their position, realigning muscles, tendons and ligaments accordingly. Use screws, wires or plates to hold the joint surfaces together until they heal. Reconstruct a badly damaged joint or replace it with an artificial implant.
最終更新日 2015.07.11 10:29:04
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