Hallux valgus, often referred to as "a bunion," is a deformity of the big toe. The toe tilts over towards the smaller toes and a bony lump appears on the inside of the foot. (A bony lump on the top of the big toe joint is usually due to a different condition, called hallux rigidus.) Sometimes a soft fluid swelling develops over the bony lump. The bony lump is the end of the "knuckle-bone" of the big toe (the first metatarsal bone) which becomes exposed as the toe tilts out of place.
No one single cause has been proven. There are a number of causes, and though shoes can exacerbate the problem, bunions do occur in societies that don?t wear them. We walk on the same type of ground all the time, whereas the human foot was actually designed to adapt to varying terrains. In a sense, a bunion is a type of repetitive strain injury. And like repetitive strain injury, some people are more prone to it than others. One theory, though it remains unproven, is that bunions are caused by one or both of the following. Because the foot wasn?t designed to constantly walk on a level surface, the ball of the big toe is slightly lower than the ball of the rest of your foot. When your foot meets the ground, the ball of the big toe is pushed up, and the big toe joint can?t bend as well as it was designed to. In order for the big toe joint to bend fully as you walk, your foot rolls slightly over to the side (this is also why people with hallux valgus often get hard skin). Also, if your midtarsal joint tends to move from side to side more than it does up and down, the arch in your foot collapses as your foot rolls in. This also makes you more prone to developing bunions. Such problems can be exacerbated by tight footwear. Slip-on shoes can make matters worse. Because they have to be tighter to stay on your feet, you automatically have less room for your toes. And with nothing to hold your foot in place, your toes often slide to the end where they?re exposed to lots of pressure. Likewise, high heels throw more weight onto the ball of the foot, putting your toes under further pressure. If you haven?t got a bunion by adulthood and you later develop one, there could be some underlying arthritis.
symptoms 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.
A thorough medical history and physical exam by a physician is necessary for the proper diagnosis of bunions and other foot conditions. X-rays can help confirm the diagnosis by showing the bone displacement, joint swelling, and, in some cases, the overgrowth of bone that characterizes bunions. Doctors also will consider the possibility that the joint pain is caused by or complicated by Arthritis, which causes destruction of the cartilage of the joint. Gout, which causes the accumulation of uric acid crystals in the joint. Tiny fractures of a bone in the foot or stress fractures. Infection. Your doctor may order additional tests to rule out these possibilities.
Non Surgical Treatment
In most cases the symptoms of bunions can be reduced or relieved without surgery. Reducing pressure on the bunion is the first step in reducing the pain associated with the condition. Wearing correctly fitting shoes is important in achieving this. A referral to a podiatrist may be made in order to assess the need for special orthotic devices, such as custom-made arch supports and shoe inserts (eg: metatarsal pad or bar). These can help to relieve tension on the base of the big toe and help prevent flat-footedness. Specific exercises and bunion pads available over-the-counter at pharmacies may also be of benefit. Anti-inflammatory medicines can help to ease pain in the short term. Steroid injections may be used to relieve severe pain. If a sufficient reduction in symptoms is not achieved by non-surgical treatment, then surgery may be recommended.
Bunion surgery is occasionally required when the bunion deformity is too advanced for conservative treatment to work. Your surgeon will usually cut an angular section from the bone to correct the alignment. In some cases, multiple toes may need to be straighten.