A bunion or hallux abducto valgus occurs when your big toe points toward your second toe. The big toe will touch the second or causes the second toe to overlap the big toe. This causes a boney bump to appear on the outside edge of your big toe. Bunions are more common in women and can sometimes run in families. Hallux abducto valgus can develop as a result of an inherited structural defect or stress on your foot or due to a medical condition such as arthritis. If there is an underlying structural defect in your foot this can lead to compensations causing stresses and pressures to be applied unevenly on the joints and tendons in your feet. This imbalance in pressure and stress makes your big toe joint unstable. Over time this causes the medial side of the 1st metatarsal head to develop excess bone that protrudes out beyond the normal shape of your foot. The size of the bunion can get larger over time which causes further crowding your other toes and causing pain. Pain from a bunion can be severe enough to keep you from walking comfortably in normal shoes. The condition may become painful as the bump gets worse, and extra bone and a fluid-filled sac (bursa) grow at the base of the big toe. By pushing your big toe inward, a bunion can squeeze your other toes into abnormal positions. This crowding can cause the four smaller toes to become bent or a claw-like in shape. These bent toes are known as hammertoes. Smaller bunions called ?bunionettes? can also develop on the joint of your 5th toe. Causes
There is some debate about the main cause of foot bunion pain, but they tend to fall into 2 categories. Genetics. There is a definite genetic link, meaning that if someone in your family suffers from a hallux abducto valgus, there is a high chance that you will too, although this is not always the case. It may be due to an abnormal foot position such as flat feet, or a medical condition such as hypermobility (where your joints are overly flexible) or arthritis (e.g. rheumatoid arthritis or gout). Regularly wearing high heels with a pointed toe puts you at high risk for developing foot bunions. Ill-Fitting Footwear. Poorly fitting shoes are thought to be the other common cause of foot bunion pain. Frequent wear of tight fitting shoes or high heels places excessive pressure on the big toe pushing it into the classic hallux abducto valgus position.
Symptoms
Bunions are readily apparent, you can see the prominence at the base of the big toe or side of the foot. However, to fully evaluate your condition, the Podiatrist may take x-rays to determine the degree of the deformity and assess the changes that have occurred. Because bunions are progressive, they don't go away, and will usually get worse over time. But not all cases are alike, some bunions progress more rapidly than others. There is no clear-cut way to predict how fast a bunion will get worse. The severity of the bunion and the symptoms you have will help determine what treatment is recommended for you.
Diagnosis
Bunions are readily apparent, you can see the prominence at the base of the big toe or side of the foot. However, to fully evaluate your condition, the Podiatrist may arrange for x-rays to be taken to determine the degree of the deformity and assess the changes that have occurred. Because bunions are progressive, they don't go away, and will usually get worse over time. But not all cases are alike, some bunions progress more rapidly than others. There is no clear-cut way to predict how fast a bunion will get worse. The severity of the bunion and the symptoms you have will help determine what treatment is recommended for you.
Non Surgical Treatment
This is probably the most important step. Wearing the right footwear can help reduce stress on a minor deformity and reduce the likelihood of it progressing. Recommendations are that the forefoot easily fits within the width of the shoe and there is adequate cushioning and arch support. Soft materials such as smooth leather, suede or fabric will also help to reduce irritation to the area. The podiatrist plays an invaluable role in managing patients with bunions. This is because they can offer a number of options to the patient that can help relieve pain and reduce the severity of the deformity. They can also reduce pressure on skin lesions that develop as a result of the biomechanical changes. Podiatrists can prescribe customised orthotic devices that help reduce the stress on a bunion and control biomechanical factors which cause them. These may be used in conjunction with bunion splints or cushions to further offload the area. Evidence has shown a significant reduction in pain with the use of customized orthotic devices.
Surgical Treatment
In cases where joint pain and deformity are severe, joint replacement surgery may be recommended. This may particularly be recommended when arthritis is present in the joint. Surgery may be carried out under a local, regional or general anaesthetic. Most cases are performed as a day stay procedure. However, an overnight stay in hospital may be required if the surgery is more extensive. The type of surgery to be performed, the type of anaesthetic to be used and the expected hospital stay should be discussed with your surgeon prior to surgery.
Prevention
The best way to reduce your chances of developing bunions is to wear shoes that fit properly. Shoes that are too tight or have high heels can force your toes together. Bunions are rare in populations that don?t wear shoes. Make sure your shoes are the correct size and that there's enough room to move your toes freely. It's best to avoid wearing shoes with high heels or pointed toes.