Sesamoid bones are small bones that are located within certain tendons, and they are often compared to tiny "pebbles" due to their size and shape. However, there are several alternate terms that can be used to describe these unique structures, all of which reflect different aspects of their anatomical location and function. Some of the most common synonyms for sesamoid bones include "accessory bones", "intratendinous bones", and "ossicles". Additionally, some specific examples of sesamoid bones include the patella (also known as the kneecap) and the two small bones located in the big toe joint, which are often referred to as the "sesamoids of the hallux". Regardless of the term used to describe them, sesamoid bones play an important role in providing support and protection to the surrounding structures.