A bunion is a deformity of the metatarsophalangeal (MTP) joint of the big toe in which the metatarsal bone shifts inward, away from the rest of the foot and the big toe shifts outward, towards the other toes. This results in a "crooked" big toe. As a result, the tissues around the MTP joint can become irritated and painful. A small fluid filled sac called a bursa sits on the inner side of the MTP joint. This bursa decreases friction between the skin and the underlying bone. It can also become irritated and painful. Causes
Women are particularly at risk for bunions, as high heels may help aggravate the condition. Bunions may also be caused when bursal sacs, sacs that absorb friction and lubricate the many tendons, bones muscles of the body, in the foot become inflamed or swollen. Bunions may also be prompted by the metatarsal bone, the bone that runs from the heel to the toe of the foot, with one metatarsal bone leading to each toe, of the big toe enlarging or deviating slightly to the outside of the foot. Symptoms
Most patients complain of pain directly on the bunion area, within the big toe joint, and/or on the bottom of the foot. The bunion may become irritated, red, warm, swollen and/or callused. The pain may be dull and mild or severe and sharp. The size of the bunion doesn?t necessarily result in more pain. Pain is often made worse by shoes, especially shoes that crowd the toes. While some bunions may result in significant pain, other bunions may not be painful at all. Diagnosis
Your doctor will be able to diagnose a bunion by asking about your symptoms and examining your feet. You may also have blood tests to rule out any other medical conditions, such as rheumatoid arthritis or gout, although this is rare. Your doctor may refer you to a podiatrist or chiropodist (healthcare professionals who specialise in conditions that affect the feet). Non Surgical Treatment
Wide shoes with plenty of space for the toes are the first place to start. Along these lines, a shoe can be focally stretched directly over the painful bunion using a device known as a ?ball and ring? shoe stretcher. Additionally, numerous commercial bunion braces and splints are available to help keep the big toe in better alignment. Surgical Treatment
In severe hallux valgus bunion cases, the first long bone (metatarsal) in the foot dramatically shifts away from the second metatarsal, resulting in looseness and a large deformity. In severe bunion corrections, a surgery known as the Lapidus procedure realigns the first metatarsal into its natural position. Using screws, the surgery holds the bone stable so it does not shift again and reduces the change of the bunion returning to basically none. Surgery may also involve removing the enlarged portion of the bunion region, cutting and realigning the bone, and correcting the position of the tendons and ligaments. By using a special plate with Lapidus procedures, University Foot and Ankle Institute patients are able to put weight on their foot after only 2-3 weeks, rather than the typical 6-8 weeks of no weight.
- 2015/06/06(土) 00:44:08|