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Overview

A bunion is an enlargement at the base of the big toe caused by a misalignment of the joint. Hallux valgus or hallux abducto valgus (HAV) is the name used for the deviated position. of the big toe and a bunion refers to the enlargement of the joint, most of the time the two go together and can just be referred to as ?bunions?. Bunions are really only a symptom of faulty foot mechanics and are usually caused by the foot we inherit and inappropriate footwear use. As the big toe bends towards the others this lump becomes larger and the bunion can become painful - arthritis and stiffness can eventually develop.

Causes
Prolonged pressure against the inside portion of the 1st MTP joint can lead to Bunions. This most commonly occurs as a result of wearing pointed toe shoes or shoes that are too tight. Another cause is over-pronation. Normal ?toe-off?occurs from bottom of the big toe. Over-pronation can cause one to ?toe-off? on the inside portion of the big toe versus the bottom. Over time, there is a retrograde force into the joint which pushes it out stretches the joint capsule. This tearing and stretching of the joint capsule as well as the wear and tear on the cartilage is what causes the pain.
SymptomsThe pain from a bunion is felt around the MTP joint of the big toe. People with bunions often complain of pain when they when they stand or walk for long periods of time. High heeled shoes or shoes with a small toe area can make bunions feel and look worse. As a result of the deformity the big toe can lose some of its range of motion or become stiff. Sometimes both feet are affected.

Diagnosis
Your family doctor or chiropodist /podiatrist can identify a bunion simply by examining your foot. During the exam, your big toe will be moved up and down to determine if your range of motion is limited. You will be examined for signs of redness or swelling and be questioned about your history of pain. A foot x-ray can show an abnormal angle between the big toe and the foot. In some cases, arthritis may also be seen. A X-ray of your foot may help identify the cause of the bunion and rate its severity.

Non Surgical Treatment
Changing your footwear to roomy and comfortable shoes that provide plenty of space for your toes. Padding and taping applied by chiropodist/podiatrist to your foot can reduce stress on the bunion and alleviate your pain. Oral medications such as acetaminophen (Tylenol), ibuprofen (Advil, Motrin) or naproxen (Aleve) may help control the pain of a bunion. Cortisone injections. Over-the-counter arch supports can help distribute pressure evenly when you move your feet, reducing your symptoms and preventing your bunion from getting worse. Prescription foot orthotic devices to help stabilize the forefoot. Manual foot therapy to free up motion in arthritic foot joints.


Surgical Treatment
The choice of surgical procedures (bunionectomy) is based on a biomechanical and radiographic examination of the foot. Because there is actual bone displacement and joint adaptation, most successful bunionectomies require cutting and realigning the 1st metatarsal (an osteotomy). Simply "shaving the bump" is often inadequate in providing long-term relief of symptoms and in some cases can actually cause the bunion to progress faster. The most common procedure performed for the correction of bunions is the 1st metatarsal neck osteotomy, near the level of the joint. This refers to the anatomical site on the 1st metatarsal where the actual bone cut is made. Other procedures are preformed in the shaft of the metatarsal bone (see procedures preformed in the shaft of the metatarsal) and still other procedures are selected by the surgeon that are preformed in the base of the metatarsal bone (see surgeries preformed in the base of the metatarsal).