Overview 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. Causes Bunions are more common in women than men. The problem can run in families. People born with abnormal bones in their feet are more likely to form a bunion. Wearing narrow-toed, high-heeled shoes may lead to the development of a bunion. The condition may become painful as the bump gets worse. Extra bone and a fluid-filled sac grow at the base of the big toe. SymptomsWhile bunions may be considered cosmetically undesirable, they are not necessarily painful. In cases where the individual has minor discomfort that can be eased by wearing wider shoes made of soft leather and/or with the aid of spacers-padding placed between the toes to correct alignment-further treatment may not be necessary. (Anti-inflammatory agents can be used to alleviate temporary discomfort at the site of the bursa.) For those who continue to experience pain on a daily basis and who cannot wear most types of shoe comfortably, surgical treatment may be the best choice. Diagnosis Before examining your foot, the doctor will ask you about the types of shoes you wear and how often you wear them. He or she also will ask if anyone else in your family has had bunions or if you have had any previous injury to the foot. In most cases, your doctor can diagnose a bunion just by examining your foot. During this exam, you will be asked to move your big toe up and down to see if you can move it as much as you should be able to. The doctor also will look for signs of redness and swelling and ask if the area is painful. Your doctor may want to order X-rays of the foot to check for other causes of pain, to determine whether there is significant arthritis and to see if the bones are aligned properly. Non Surgical Treatment Apply special pads and dressings to protect the bunion from shoe pressure. Inject steroid and local anesthetic around the bunion to reduce inflammation. This is especially useful if there is an associated bursitis. Recommend commercially available or custom made shoes. Prescribe functional orthotics to correct faulty foot function, and help prevent worsening of the deformity. Recommend bunion surgery to correct the deformity. Surgical Treatment 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.