Is the coxal bone (os coxa) one bone or three separate bones?
What is the function of the acetabulum?
The coxal bone, also known as the hip bone or os coxa, is comprised of three separate bones that fuse together during development. These three bones are the ilium, ischium, and pubis.
The acetabulum is a cup-shaped socket located on the lateral surface of the coxal bone. Its primary function is to articulate with the head of the femur (thigh bone) to form the hip joint. It provides stability and support to the hip joint, allowing for movements like flexion, extension, abduction, adduction, and rotation of the thigh.