Why Do I Get Hallux Valgus

Overview

A bunion or hallux valgus is a prominence on the inner border of the foot effecting the big toe and at the level of the 1st metatarso-phalangeal (MTP) joint. The bunion prominence which is seen and felt on the inner border of the foot is not due to any growth of bone but is due to the 1st metatarsal bone. With a bunion this has become more prominent than normal because the 1st metatarsal has moved away from its immediate neighbour the 2nd metatarsal. This widens the forefoot thus producing the bunion. An inevitability of the splaying of the foot which occurs with a bunion or hallux valgus is that the great toe itself is then pulled across in the opposite direction (towards the second toe) by the still normally located tendons of the big toe. A bunion or hallux valgus is commonly confused with hallux interphalangeus (where the deformity lies more distally and which tends to be less problematic). Here there is no increase in the space between the metatarsals, and the deformity lies in the shape of the phalynx bone.

Causes
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.
Symptomssymptoms and problems caused by bunions include pain. You may then have difficulty walking due to pain. Inflammation and swelling at the base of the toe. This sometimes becomes infected. The foot may become so wide that it can be difficult to find wide enough shoes. You may get arthritis in the big toe. The second toe can become deformed. In severe cases, the big toe can push your second toe up out of place.

Diagnosis
Orthopaedic surgeons diagnose bunions on the basis of physical examination and weight bearing x-rays. Two angles are assessed, the intermetatarsal angle, that is between the first and second metatarsals (the bones that lead up to the base of the toes). If this angle exceeds 9? (the angle found in the healthy foot) it is abnormal and referred to as metatarsus primus varus. the hallux valgus angle, that is, the angle of the big toe as it drifts toward the small toe. An angle that exceeds 15? is considered to be a sign of pathology.

Non Surgical Treatment
Most of the time, non-surgical (conservative) treatment can control the symptoms of a foot bunion or bunionette. These include. Appropriate Footwear, changing to wide fitting footwear reduces the pressure on the big toe and prevents shoes from rubbing on the bony lump. When possible, go barefoot
Toe stretchers are a really simple way to reduce foot bunion pain. Toe Stretchers, wearing toe spaces that fit in-between the toes help to stretch the muscles and ligaments around the toes, improving the alignment and relieving pain. Find out more about how these work in the Toe Stretcher section. Painkillers, your doctor may prescribe or recommend over-the-counter medication to reduce the pain and inflammation. Foot bunion correctors can be worn in your shoe to help realign your foot if you suffer from foot bunions. Orthotics. There are a number of over-the-counter shoe inserts that can help relieve symptoms. Bunion correctors work by realigning the bones in your foot to reduce pressure on the affected toe. There are both day-time and night-time splints on the market, although the evidence of their effectiveness is lacking. Ice. Applying ice packs to the foot can help reduce pain and inflammation. Bunion pads help to reduce any friction on your big toe. Bunion Pads. You can also get protective foot cushions that sit over the skin to prevent the hallux abducto valgus rubbing on your shoes.


Surgical Treatment
The decision to have bunion surgery is personal and different everyone. While there are many reasons to have bunion surgery, the most common reasons include. Pain. Difficulty walking. Difficulty fitting shoes. Worsening bunion. Pain at the ball of the foot. Failed conservative measures. See Non-surgical Treatment. Some people have surgery simply because they don?t like the way the bunion looks. While some doctors may correct your bunion if it doesn?t hurt, you should be aware that permanent pain may occur after your surgery.