What Causes Bunions?

Overview
Bunions, referred to in the medical community as Hallux Valgus, are one of the most common forefoot problems. A bunion is a prominent bump on the inside of the foot around the big toe joint. This bump is actually a bone protruding towards the inside of the foot. With the continued movement of the big toe towards the smaller toes, it is common to find the big toe resting under or over the second toe. This causes a common forefoot condition called overlapping toes. Some of the symptoms of bunions include inflammation, swelling, and soreness on the side surface of the big toe. The discomfort commonly causes a patient to walk improperly. Another type of bunion which some individuals experience is called a Tailor's Bunion, also known as a Bunionette. This forms on the outside of the foot towards the joint at the little toe. It is a smaller bump that forms due to the little toe moving inwards, towards the big toe.

Causes
Bunions are caused by pressure on the inside of the forefoot which causes the 1st metatarsal bone in the foot to migrating outwards. Biomechanical factors can contribute to the development of bunions for example if you over pronate where the foot rolls in or flattens excessively which causes the inside of the foot to rub against the shoe. Wearing high heeled shoes regularly also increases the risk of developing the condition . The pressure on the forefoot is increased considerably as the heel is raised up. Age is also a factor as the ligaments lose strength as you get older.

Symptoms
The most common symptoms associated with this condition are pain on the side of the foot. Shoes will typically aggravate bunions. Stiff leather shoes or shoes with a tapered toe box are the prime offenders. This is why bunion pain is most common in women whose shoes have a pointed toe box. The bunion site will often be slightly swollen and red from the constant rubbing and irritation of a shoe. Occasionally, corns can develop between the 1st and 2nd toe from the pressure the toes rubbing against each other. On rare occasions, the joint itself can be acutely inflamed from the development of a sac of fluid over the bunion called a bursa. This is designed to protect and cushion the bone. However, it can become acutely inflamed, a condition referred to as bursitis.

Diagnosis
Before examining your foot, the doctor will ask you about the types of shoes you wear and how often you wear them. He or she also will ask if anyone else in your family has had bunions or if you have had any previous injury to the foot. In most cases, your doctor can diagnose a bunion just by examining your foot. During this exam, you will be asked to move your big toe up and down to see if you can move it as much as you should be able to. The doctor also will look for signs of redness and swelling and ask if the area is painful. Your doctor may want to order X-rays of the foot to check for other causes of pain, to determine whether there is significant arthritis and to see if the bones are aligned properly.

Non Surgical Treatment
Most bunions can be treated without surgery. The first step for treating bunions is to ensure that your shoes fit correctly. Often good footwear is all that is needed to alleviate the problem. Shoes that are wide enough to avoid pressure on the bunion are the obvious first step. Look for shoes with wide insteps and broad toes and definitely no high heels. Sometimes, you can get your existing shoes stretched out by a shoe repairer. Seek advice from a podiatrist. Pads and toe inserts. Protective bunion pads may help to cushion the joint and reduce pain. Toe inserts are available that splint the toes straight. It may be recommended that you wear some orthotics to improve your foot position when walking. Medicines. Some people find anti-inflammatory medicines, such as ibuprofen or aspirin, or paracetamol help ease the pain of their bunions.

Surgical Treatment
Research shows that 85% of people who have bunion corrections are satisfied with the results. However, a number of problems can arise. The big toe is usually stiffer than before. For most people this does not matter, but for athletes or dancers it is very important. As mentioned before, the big toe is slightly weaker with a bunion, and this transfers weight onto the ball of the foot. After bunion surgery, this transfer of weight can increase. Therefore, if you have pain under the ball of the foot ("metatarsalgia") it may be worse after bunion surgery, and it may also develop for the first time. Careful surgical technique can reduce this risk, but it cannot avoid it completely. Most people who develop metatarsalgia are comfortable with a simple insole in the shoe but occasionally surgery is required. In some people the big toe slowly tilts back toward the original position and occasionally this is bad enough to need to have the operation redone. On the other hand, the toe can tilt the other way, though much more rarely. Again, occasionally this is bad enough to need to have the operation redone. Infections in the wound, plaster problems and minor damage to the nerves of the toe can occur in any foot surgery. Usually these are minor problems that get better quickly. This may sound like a lot of possible problems, but in fact most people do not get them and are satisfied with their bunion surgery. However, this may help you to see how important it is to have any bunion surgery carried out by a properly trained and experienced foot and ankle surgeon.