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Overview

The original definition of a bunion was a bursa (a fluid-filled sac) on the side of the foot near the base of the big toe. The bursa was caused by a chronic friction of the patient's first metatarsal bone (the bone to which the big toe attaches) and the shoe. Few people go by this definition any longer. Today most people consider a bunion to be the enlarged bone on the side of the foot that typically caused the bursa. Along with this bump, there is usually an associated mis-alignment of the big toe, with it leaning in towards the second toe. In medical jargon, the term for a bunion is "Hallux Abducto Valgus," or "HAV" for short. Though the condition is really slightly different, it may also be known as "Hallux Valgus." Bunions are usually a progressive problem, and can make it difficult to find shoes that fit. The condition is often quite uncomfortable, not only because of the pressure the shoes exert on the bump, but because of the other factors associated with bunions, which we shall discuss shortly. This is usually a progressive problem, and can make it difficult to find shoes that fit. The condition is often quite uncomfortable, not only because of the pressure the shoes exert on the bump, but because of the other factors associated with bunions, which we shall discuss shortly.

Causes
Foot problems typically develop in early adulthood and get worse as the foot spreads with aging. For many people, bunions run in the family. They may be just one of several problems due to weak or poor foot structure. Bunions sometimes develop with arthritis. In people with leg length discrepancies, bunions usually form in the longer leg. Women are especially prone to developing bunions. Years of wearing tight, poorly fitting shoes especially high-heeled, pointed shoes can bring on bunions. Such shoes gradually push the foot bones into an unnatural shape.
SymptomsBunions or hallux valgus tend to give pain predominantly from the metatarsal head on the inner border of the foot. The bunion tends to be painful mainly when in enclosed shoes and so is often more symptomatic in winter. As the front part of the foot splays and the great toe moves across towards the 2nd toe a bunion can also produce pain from the 2nd toe itself. The pain which a bunion produces on the 2nd toe is either due to direct rubbing between the great toe and the 2nd toe, a hammer toe type deformity produced due to crowding of the 2nd toe by the bunion and the 3rd toe.The hammer toe will either be painful from its top aspect where it rubs directly on shoe wear or its under surface in the area of the 2nd metatarsal head. This is made prominent and pushed to the sole of the foot by the 2nd toe rising upwards and driving the metatarsal head downwards.

Diagnosis
People with bunions may be concerned about the changing appearance of their feet, but it is usually the pain caused by the condition that leads them to consult their doctor. The doctor will evaluate any symptoms experienced and examine the affected foot for joint enlargement, tissue swelling and/or tenderness. They will also assess any risk factors for the condition and will ask about family history. An x-ray of the foot is usually recommended so that the alignment of big toe joint can be assessed. This would also allow any other conditions that may be affecting the joint, such as arthritis, to be seen.

Non Surgical Treatment
Getting rid of a Bunion is almost impossible without surgery. Foot and toe exercises can help. Foam pads can reduce the pressure on the joint. Ice packs and anti-inflammatory medication can help reduce swelling. The progress of a Bunion can be slowed or even halted, especially if it is caused by ill-fitting footwear. Of course the best course of action is to not wear pointy-toed high-heel shoes to begin with. But if you have worn improper footwear and now want to stop the progress of Bunions.


Surgical Treatment
If your bunion is symptomatic and causing you persisting and troublesome symptoms then surgery should be considered. There is no correct amount of pain or inconvenience which a bunion may cause which warrants surgery. Symptoms which a bunion causes are generally subjective, and what is a problem in one person?s view will not be a problem in another's. For bunion surgery to be successful (correcting the deformity and losing the symptoms) the mechanical factors driving the deformity should be overcome. Bunion surgery should replace the 1st metatarsal closer to the 2nd thus reducing the width of the foot, and also realigning the tendons and reducing their deforming forces. These principals of bunion surgery are well demonstrated by the following x-rays which shows how a Scarf osteotomy has achieved this aim.