A bunion is the enlargement of the joint at the base of the big toe. It occurs as a result of the misalignment of the bones of the big toe. This leads to stretching of the ligaments and tendons around the big toe joint and causes soft tissue over the joint to become inflamed and painful. There may be additional bone formation (exostosis) in the joint and the skin around the joint may become red and tender. Over time the cartilage in the joint can break down, leading to arthritis.
Causes
People born with abnormal bones (congenital) in their feet. Inherited foot type. Foot injuries. Inflammatory or degenerative arthritis causing the protective cartilage that covers your big toe joint to deteriorate. Wearing high heels forces your toes into the front of your shoes, often crowding your toes. Wearing shoes that are too tight, too narrow or too pointed are more susceptible to bunions. Pain from arthritis may change the way you walk, making you more susceptible to bunions. Occupation that puts extra stress on your feet or job that requires you to wear ill-fitting shoes. The tendency to develop bunions may be present because of an inherited structural foot defect.
Symptoms
The symptoms of a bunion include pain, swelling, and redness over the bony bump on the inside of the foot. It can become painful to walk, because the big toe bends every time you take a step. Shoes can become painful to wear, especially ones that are even a little bit tight. Usually, bunions become more painful as they get larger. In severe cases, you can develop arthritis in the big toe as a result of the bunion. However, a bunion that is not painful does not need surgical treatment, even a large one.
Diagnosis
Bunions are readily apparent - the prominence is visible at the base of the big toe or side of the foot. However, to fully evaluate the condition, the foot and ankle surgeon may take x-rays to determine the degree of the deformity and assess the changes that have occurred. Because bunions are progressive, they don?t go away, and will usually get worse over time. But not all cases are alike - some bunions progress more rapidly than others. Once your surgeon has evaluated your bunion, a treatment plan can be developed that is suited to your needs.
Non Surgical Treatment
If abnormal pronation is identified and corrected early, the formation of a bunion can be prevented. However, if the bunion has already developed and cannot be tolerated by the patient, surgery is necessary. Amputation of the big toe ceased to be a treatment for bunions many generations ago, but only in the past few years have surgical procedures been developed to incorporate the realignment of the bone with the correction of the abnormal motion that led to deformity.
Surgical Treatment
Bunion surgery involves realigning the joint into a better position. The procedure is usually performed under a general anaesthetic so the patient is not awake during the operation. A bunion causes a prominent bone over the inside of the joint between the foot and the big toe known as the 1st metatarso-phalangeal joint. It gives the appearance of the big toe pointing in towards the others. Surgery is a last resort treatment option in severe cases where walking or wearing shoes is painful.
Prevention
Make better shoe choices. If you?re a woman, avoid high-heeled footwear whenever possible (at the very least, choose shoes with heels lower than two inches), and make sure all your footwear has a wide, deep toe box. Whether man or woman, if you?re trying on shoes and your toes feel ?squished? or crowded by a particular shoe, reject that style and try another, or go for a larger size. You don?t need to invite trouble. In general, shoes that come to a point at the toe are bad news, as they tend to push the toes together into an overlapping pattern. Shoes with rocker soles will unload pressure on the bunion area. Examine your feet regularly. Note any redness, swelling or discoloration. Flex your toes and check for any stiffness. If there is any, think back to what you?ve worn or done in the past few days. If the condition persists more than a few days, or worsens, a visit to the podiatric physician is in order.