A bunion is a ?bump? on the joint at the base of the big toe-the metatarsophalangeal (MTP) joint-that forms when the bone or tissue at the big toe joint moves out of place. The toe is forced to bend toward the others, causing an often painful lump of bone on the foot. Because this joint carries a lot of the body's weight while walking, bunions can cause extreme pain if left untreated. The MTP joint itself may become stiff and sore, making even the wearing of shoes difficult or impossible. A bunion-from the Latin "bunio," meaning enlargement, can also occur on the outside of the foot along the little toe, where it is called a "bunionette" or "tailor's bunion".
Bunions can be caused by the following factors. Hereditary (especially via the female line). Rolling in (pronation) of the feet. Walking with turned out feet. Weakness of muscles controlling the big toe. Weakness of intrinsic muscles of the feet. Leaning on the big toe in a tendu, especially to second or derri?re. Reduced mobility of the big toe when on demi-pointe. Restricted pointe range.
The major symptom of bunions is a hard bump on the outside edge of the foot or at the base of the big toe. Redness, pain and swelling surrounding or at the MTP joint can also occur.
Although bunions are usually obvious from the pain and unusual shape of the toe, further investigation is often advisable. Your doctor will usually send you for X-rays to determine the extent of the deformity. Blood tests may be advised to see if some type of arthritis could be causing the pain. Based on this evaluation, your doctor can determine whether you need orthopaedic shoes, medication, surgery or other treatment.
Non Surgical Treatment
Treatment for bunions ranges from non-surgical to surgical. Conservative, non-surgical treatments are aimed to help alleviate some of the discomfort and pain from the bunion, they will not fix the problem. Some of the recommendations would be shoe modification to make room for the bunion, wearing wide toed shoes, or adding padding and cushioning to your shoes.
Larger bunions often require the surgeon to move the entire bone over (1st metatarsal). This is accomplished by a cut or fusion at the bottom of the bone. The former technique, is called the Lapidus bunionectomy. Additionally, the repositioned bone is held in place with one or two surgical screws.