👉 Solipedous is a term used in anatomy and physiology to describe a structure that is not fully developed or functioning. In the context of humans, it refers to a part of the spine where two vertebrae meet at their intersection, which is known as the sacrum. The sacrum is a key component of the pelvis, and its absence can lead to a wide range of health problems such as spinal stenosis (a condition in which the spine becomes narrow or compressed), herniated