Bunions are bony protrusions located at the base of the big toe that develop when the toe is slanted inward or overlaps the next toe. They can be very painful. Bunions form when the movement of the big toe influences the angle of the bones in the foot. The changes gradually develop into the characteristic bump, which over time becomes more and more noticeable.
Long periods of pressure from a tight-fitting shoe can cause the inflammation and the pain. This often happens when the big toe is forced into a position where it presses inward and overlaps the second toe. The base of the big toe then is pushed beyond normal alignment of the foot, resulting in the prominence typical of a bunion.
The pain from a bunion is felt around the MTP joint of the big toe. People with bunions often complain of pain when they when they stand or walk for long periods of time. High heeled shoes or shoes with a small toe area can make bunions feel and look worse. As a result of the deformity the big toe can lose some of its range of motion or become stiff. Sometimes both feet are affected.
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
Because they are bone deformities, bunions do not resolve by themselves. The goal for bunion treatment is twofold: first, to relieve the pressure and pain caused by irritations, and second to stop any progressive growth of the enlargement. Commonly used methods for reducing pressure and pain caused by bunions include the use of protective padding, often made from felt material, to eliminate the friction against shoes and help alleviate inflammation and skin problems. Removal of corns and calluses on the foot. Changing to carefully fitted footwear designed to accommodate the bunion and not contribute toward its growth. Orthotic devices, both over-the-counter and custom made-to help stabilize the joint and place the foot in the correct position for walking and standing. Exercises to maintain joint mobility and prevent stiffness or arthritis. Splints for nighttime wear to help the toes and joint align properly. This is often recommended for adolescents with bunions, because their bone development may still be adaptable.
There are many different procedures described to correct bunions. You should be aware that usually just shaving the bunion off, although it is attractive and minimally invasive, is usually not enough. Initially the foot will look much better but with time the bunion will recur. Arthrodesis refers to surgery performed on the great toe joint where the joint is fused. This is usually reserved for people with very severe deformities when other surgical options are impossible. Bunionectomy refers to the simple removal of the bunion itself. This is seldom used because it doesn?t correct the underlying bone problems. Osteomety is the commonest surgical procedure. The bone is cut and the bones realigned and pinned in place until they heal so that the underlying bone deformity is corrected and the bunion will not recur. The resection arstplasty refers to the removal of the toe joint and this creates a flexible scar that functions as the joint instead. In the past there has been some interest in implanting artificial joints but this has fallen out of favor due to the fact that they usually do not hold up with the normal every day stress that people put their feet through.
The best protection against developing bunions is to protect and care for your feet every day. Avoid tight and narrow-fitting shoes. Limit your use of high heels. Wear comfortable shoes with adequate space between your longest toe and the end of the shoe. Getting treatment for very flat or very high-arched feet (if you are experiencing symptoms) will give your feet the proper support and help maintain stability and balance.