A bunion, also known as hallux valgus, is a painful deformity that develops at the base of the big toe. Bunions are caused when the big toe pushes and bends inward towards the other toes. This displaces the bones of the joint, causing it to protrude in a way that looks like a large growth. Bunions develop due to a variety of factors. Some people inherit feet that are more susceptible due to their shape and structure, having flat feet for instance. But bunions can be made worse by the wrong shoe, or by carrying extra weight or prolonged periods of standing or walking.
Bunions are sometimes genetic and consist of certain tendons, ligaments, and supportive structures of the first metatarsal that are positioned differently. This bio-mechanical anomaly may be caused by a variety of conditions intrinsic to the structure of the foot, such as flat feet, excessive flexibility of ligaments, abnormal bone structure, and certain neurological conditions. These factors are often considered genetic. Although some experts are convinced that poor-fitting footwear is the main cause of bunion formation, other sources concede that footwear only exacerbates the problem caused by the original genetic structure. Bunions are commonly associated with a deviated position of the big toe toward the second toe, and the deviation in the angle between the first and second metatarsal bones of the foot. The small sesamoid bones found beneath the first metatarsal (which help the flexor tendon bend the big toe downwards) may also become deviated over time as the first metatarsal bone drifts away from its normal position. Arthritis of the big toe joint, diminished and/or altered range of motion, and discomfort with pressure applied to the bump or with motion of the joint, may all accompany bunion development. Atop of the first metatarsal head either medially or dorso-medially, there can also arise a bursa that when inflamed (bursitis), can be the most painful aspect of the process.
Pain in the toe joint and surrounding area. Painful to touch or press, and when walking. Growth of a bony lump (exostosis) at the side of the big toe joint. Irritated skin around the bunion. Redness. Thickening of overlying skin. Blisters may form more easily. Deformed bones, joints and ligaments as the big toe shifts towards the other toes. As the big toe shifts, its base becomes more prominent, forming the bunion. Eventually the big toe is forced to lie over, or more commonly under, the second toe. The second toe of patients who have bunions commonly forms a hammer toe. Trouble with shoes. It is difficult to find shoes that fit properly. Bunions may force you to buy a larger size shoe to accommodate the width the bunion creates. Eventually it hurts to wear any shoe, or even walk barefoot.
Most patients are diagnosed to have bunions from clinical history and examination. However, in some cases, X-rays will be performed to determine the extent of damage to the joint. Furthermore, it will enable the treating doctor to decide on the best course of management of the patient.
Non Surgical Treatment
When a bunion first begins to develop, take good care of your feet. Wear wide-toed shoes. This can often solve the problem and prevent you from needing more treatment. Wear felt or foam pads on your foot to protect the bunion, or devices called spacers to separate the first and second toes. These are available at drugstores. Try cutting a hole in a pair of old, comfortable shoes to wear around the house.
There is no "standard" bunion, but rather a complex range of joint, bone, muscle, tendon and ligament abnormalities that can cause variation in each bunion's make-up. As a result, there are a broad variety of surgical techniques for dealing with bunions. Most surgical procedures start with a simple bunionectomy, which involves excision of swollen tissues and removal of the enlarged boney structure. While this may remove the troublesome tissues, however, it may not correct other issues associated with the bunion. The surgeon may also need to tighten or loosen the muscles, tendons and ligaments around the MTP joint. Realign the bone by cutting it and shifting its position (a technique called osteotomy), 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.
To minimize the chance of developing bunions, never force your feet into shoes that don?t fit. Choose a shoe that conforms to the shape of your foot. Opt for shoes with wider insteps, broad toes, and soft soles. Shoes that are short, tight, or sharply pointed should be avoided.