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Medically referred to as syndactyly (a name that also refers to webbed fingers), webbed toes are described as two or more toes fused together. While it is normal for animals such as ducks and frogs to have webbed toes, it is not as common among humans. During early fetal development, all our toes and fingers are webbed together.
What causes hammer, claw, and mallet toes? Tight shoes are the most common cause of these toe problems. Wearing tight shoes can cause the toe muscles to get out of balance. If a shoe forces a toe to stay in a bent position for too long, the muscles tighten and the tendons shorten, or contract.