What is sutura lambdoidea?

Sutura lambdoidea is a type of suture found on the posterior portion of the skull, which joins the parietal bone with the occipital bone. It has a unique triangular shape, resembling the Greek letter Lambda (Λ), hence the name "lambdoid" suture. This suture is an important landmark in cranial anatomy as it divides the skull into two main sections, the occipital and posterior parietal regions. During fetal development, this suture is not yet fused, allowing for the skull to expand and accommodate brain growth, and it typically fuses completely by early adulthood. The sutura lambdoidea may be of interest to scientists, anatomists, and anthropologists as its shape and fusion timing can provide insights into the development and evolution of the human skull.