How does an extra bone disappear over time?

An extra bone, often referred to as an accessory bone, can disappear over time through a process called resorption. This occurs when the body reabsorbs the bone tissue, typically due to mechanical stress, changes in load distribution, or lack of use. Over time, factors such as aging, hormonal changes, or injury can influence this process, leading to the gradual disappearance of the accessory bone. This phenomenon is part of the body's natural ability to adapt and remodel itself in response to various physiological demands.