Polydactyly refers to the presence of more than five toes on a foot. This condition tends to run in families and may occur in isolation or be a symptom of genetic disease. The extra toe is typically smaller than the other toes and not fully formed. It may or may not contain bone, muscle and other tissues.
If the extra toe is merely a stalk, a clip may be used to help it fall off naturally, much like a navel. However, if it is well formed, surgical removal may be necessary.