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Overview

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.

Causes
Improper footwear. Podiatric physicians have long believed that narrow, poor-fitting shoes with a tight toe box tend to compress the end of the foot, leading to abnormal motion of the foot and pressure over the MTP joint. High-heeled shoes tend to add even more pressure to the toes, as the foot slides downward. Over time, continued pressure will squeeze the toes together, encouraging the deformity. Occupational hazards. Individuals whose jobs place undue stress on their feet are among those who complain of bunions. Ballet dancers, in particular, put great demands on their toes, and thus are often subject to bunions, however, they are not alone. Many professionals whose jobs require a great deal of standing or walking (teachers, police officers, doctors and nurses, etc.) and/or who are required to wear a particular type of shoe or boot as part of a uniform, also are at risk. Athletes such as runners or walkers, who utilize the wrong footwear, may also develop bunions.
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
Most patients are diagnosed to have bunions from clinical history and examination. However, in some cases, X-rays will be performed to determine the extent of damage to the joint. Furthermore, it will enable the treating doctor to decide on the best course of management of the patient.

Non Surgical Treatment
Patients should immediately cease using improperly fitted shoes. Footwear selection should have a wide and roomy toebox to accommodate the full width of the foot. If the problem is the over-pronation, the patient should be fitted with orthotics and can expect a slow recovery from pain over a period of months. Orthotics will not cause the physical deformity to regress, but will simply arrest any further progression and likely stop the pain. It is important to note however, that when bunions are severe and require surgery, the bunion can be corrected, but will develop again unless the root cause of over-pronation is corrected. If over-pronation is the root cause, orthotics will still be necessary.


Surgical Treatment
Surgery can be a very successful treatment for bunions and could be considered if you are having pain that is affecting your function on a regular basis, for instance, pain during sports or wearing work shoes. It is important, however, that you are seen by a consultant orthopaedic foot and ankle surgeon who has undergone specialist training with a foot and ankle fellowship. There are many different surgical techniques and it is important that your surgeon is expert in several of these so that you have the one that is best for your unique deformity. Bunion removal is usually done under general anesthesia. This means you will be asleep throughout the procedure. The operation can be performed as a day-case, but an overnight stay in hospital is sometimes required. Your surgeon will explain the benefits and risks of having bunion surgery, and will also discuss the alternatives treatments.