A bunion is a painful bony bump that develops on the inside of the foot at the big toe joint. Bunions are often referred to as hallux valgus. The constant pressure on the big toe joint causes the big toe to lean toward the second toe. Over time, the normal structure of the bone changes, resulting in the bunion bump. This deformity will gradually increase and may make it painful to wear shoes or walk.
Orthosis, as artificial support for a part of the body. An orthotic may be prefabricated or custom made to fit you. This new terminology is gradually replacing the old usage, where the terms splint and orthotic sometimes overlapped. What used to be called a hammertoe splint is now called an orthotic.