Hallux Abducto Valgus
A bunion is one problem that can develop due to hallux valgus, a foot deformity. The term ?hallux valgus? is Latin and means a turning outward (valgus) of the big toe (hallux). The bone which joins the big toe, the first metatarsal, becomes prominent on the inner border of the foot. This bump is the bunion and is made up of bone and soft tissue.
Shoes. The primary cause of bunions is the long term use of shoes, particularly tight-fitting shoes with pointed toes, or high heeled shoes. A study that examined people in cultures that do not wear shoes found no cases of bunions. Genetic. People who have misaligned toes or feet, are flatfooted with feet that roll inwards (over pronation), excessive flexibility of ligaments, abnormal bone structure, or have mechanical instability in the big toe joint are more susceptible to bunions. This is especially common when bunions occur in children or young adults. Injuries or other trauma (sprains, fractures or nerve injuries), neuromuscular disorders (polio or Charcot-Marie-Tooth disease), or limb-length discrepancies (one leg longer than the other). Repetitive stresses to the foot. Bunions are common in ballet dancers and in a few sports. Arthritis.
SymptomsBunions may cause no pain at first. But as the big toe begins to turn in towards the other toes, people with bunions usually experience redness, pain, swelling, and tenderness in the area around the joint. Pressure inside the joint or from footwear pressing against the bunion may also cause discomfort. As the affected toe curves closer to the other toes on the foot, these toes can become painful as well. Complications of bunions include corns, calluses, hammer toe, and ingrown toenails. Other complications include irritation of the nerves surrounding the bunion area. Excess rubbing of the bunion against the footwear may lead to changes in the skin, resulting in corns or calluses. Hammer toe is a deformity of the toe immediately next to the big toe. A hammer toe is slightly raised and points upwards from the base and downwards at the end of the toe. Ingrown toenails can result from increased pressure from the big toe on the other toes. There may also be a decrease in the amount a person can move the joint affected by the bunion. Irritation of the nerves will feel like burning or decreased sensation.
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
Early treatment of bunions is centered on providing symptomatic relief. Switching to a shoe with a rounder, deeper toe box and made of a softer more pliable leather will often provide immediate relief. The use of pads and cushions to reduce the pressure over the bone can also be helpful for mild bunion deformities. Functional foot orthotics, by controlling abnormal pronation, reduces the deforming forces leading to bunions in the first place. These may help reduce pain in mild bunion deformities and slow the progression of the deformity. When these conservative measures fail to provided adequate relief, surgical correction is indicated.
As you explore bunion surgery, be aware that so-called "simple" or "minimal" surgical procedures are often inadequate "quick fixes" that can do more harm than good. And beware of unrealistic claims that surgery can give you a "perfect" foot. The goal of surgery is to relieve as much pain, and correct as much deformity as is realistically possible. It is not meant to be cosmetic. There are several techniques available, often as daycare (no in-patient stay), using ankle block local anaesthetic alone or combined with sedation or full general anaesthesia. Most of the recovery occurs over 6-8 weeks, but full recovery is often longer and can include persistent swelling and stiffness. The surgeon may take one or more of the following steps in order to bring the big toe back to the correct position: (a) shift the soft tissue (ligaments and tendons) around the joint and reset the metatarsal bone (osteotomy), remove the bony bump and other excess bone or (b) remove the joint and connect (fuse) the bones on the two side of the joint (fusion). These are just a few examples of the many different procedures available and your treating surgeon can help you decide the best option for you.
Because bunions develop slowly, taking care of your feet during childhood and early adulthood can pay off later in life. Keep track of the shape of your feet as they develop over time, especially if foot problems run in your family. Exercising your feet can strengthen them. Learn to pick up small objects, like a pencil or pebble, with your toes. Wear shoes that fit properly and don't cramp or pinch your toes. Women should avoid shoes with very high heels or pointed toes.