Your big toe is the hardest-working toe. Every time your foot pushes off the ground, this toe supports most of your body's weight. Because the big toe is so critical to movement, any problem with it can make walking or even standing painful. A bunion (excess or misaligned bone in the joint) is one of the most common big toe problems. In addition to causing pain, a bunion changes the shape of your foot, making it harder to find shoes that fit. But you don't have to hobble for the rest of your life. Bunions can be treated. With your doctor's help, your feet can feel and look better.
Although they may develop on the fifth (little) toe, bunions usually occur at the base of the big toe. Bunions are often caused by incorrect foot mechanics. The foot may flatten too much, forcing the toe joint to move beyond normal range. In some cases, joint damage caused by arthritis or an injury produces a bunion. And some people are born with the tendency to develop bunions. If you're at risk for developing a bunion, wearing high-heeled or poorly fitting shoes makes the problem worse.
Positional (mild) bunions arise from the growth of new bone. Structural (severe) bunions results when the joint at the base of the toe shifts position. Many bunions are a combination of both types.
As new bone grows, the joint enlarges. This stretches the joint's outer covering. Force created by the stretching pushes the big toe toward the smaller ones. Eventually, the inside tendons tighten, pulling the big toe farther out of alignment.
If a bunion is not painful or severe, your doctor may recommend that you wear a different style of shoes. Or you may be prescribed custom-made shoe inserts (orthoses) to control incorrect foot mechanics. For painful or severe bunions, outpatient surgery may be recommended. After surgery, you'll soon be on your way home and ready for recovery.
If a structural bunion is severe, a piece of bone is removed from the first metatarsal (the long bone behind the big toe joint.) Once repositioned, this bone may be held in place with a pin or a screw. Any new bone that makes up a bunion is shaved away.