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2015.06.09
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Overview

Your big toe is the hardest working toe. Every time your foot pushes off the ground, this toe supports most of your body's weight. Because the big toe is so critical to movement, any problem with it can make walking or even standing painful. A bunion (excess or misaligned bone in the joint) is one of the most common big-toe problems. In addition to causing pain, a bunion changes the shape of your foot, making it harder to find shoes that fit. But you don't have to hobble for the rest of your life. Bunions can be treated. With your doctor's help, your feet can feel and look better.

Causes
The main cause of bunions is excessive pressure being placed on the front of the foot, and is usually the result of wearing high-heeled shoes with pointed toes. A study by the American Orthopaedic Foot and Ankle Society found that 88 percent of women in the United States wear shoes that are too small and that 55 percent of them have bunions. Overall, bunions are nine times more common in women than men. In some cases, bunions are hereditary; they also may be caused by arthritis or polio.
SymptomsThe most obvious symptoms of a bunion are. Pain in the area of the MTP joint, the joint where your big toe connects to your foot. Bending of the big toe in towards the other toes. An enlarged bump of bone or tissue at the MTP joint. Each symptom can range in degree from small to severe. Sometimes the pain can be sufficient to make it difficult to walk in normal shoes. Other symptoms may include. Swelling and inflammation of the skin around the MTP joint. Thickening of the skin in the area of the joint. Restricted motion in your big toe. Pressure from the inward bending of your big toe can affect your other toes, leading to corns on your smaller toes. Ingrown toenails on the smaller toes. Development of hammertoes in the other toes. Calluses on the bottom of your foot. If you have any of these symptoms, especially pain, displacement of your big toe or development of a bulge, you should consider consulting your physician. Even if you're not significantly bothered by some of these symptoms, bunions tend to continue getting bigger and more serious over time and should be taken care of before they do so.

Diagnosis
Orthopaedic surgeons diagnose bunions on the basis of physical examination and weight bearing x-rays. Two angles are assessed, the intermetatarsal angle, that is between the first and second metatarsals (the bones that lead up to the base of the toes). If this angle exceeds 9? (the angle found in the healthy foot) it is abnormal and referred to as metatarsus primus varus. the hallux valgus angle, that is, the angle of the big toe as it drifts toward the small toe. An angle that exceeds 15? is considered to be a sign of pathology.

Non Surgical Treatment
Getting rid of a Bunion is almost impossible without surgery. Foot and toe exercises can help. Foam pads can reduce the pressure on the joint. Ice packs and anti-inflammatory medication can help reduce swelling. The progress of a Bunion can be slowed or even halted, especially if it is caused by ill-fitting footwear. Of course the best course of action is to not wear pointy-toed high-heel shoes to begin with. But if you have worn improper footwear and now want to stop the progress of Bunions.


Surgical Treatment
If conservative treatment doesn't provide relief, you may need surgery. A number of surgical procedures are performed for bunions, and no particular surgery is best for every problem. Knowing what caused your bunion is essential for choosing the best procedure to ensure correction without recurrence. Most surgical procedures include rmoving the swollen tissue from around your big toe joint Straightening your big toe by removing part of the bone Permanently joining the bones of your affected joint You may be able to walk on your foot immediately after some bunion procedures. With other procedures, it may be a few weeks or longer. To prevent a recurrence, you'll need to wear proper shoes after recovery.





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最終更新日  2015.06.09 06:25:44
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