Ischium

Definition

The ischium is one of the three bones that make up the pelvis, specifically forming the lower and back part of the hip bone. It supports weight when sitting and connects with the ilium and pubis at the acetabulum, where it contributes to the socket for the femur.

Related terms

Ilium:

The uppermost and largest part of the hip bone, contributing to the formation of the pelvic girdle and providing attachment points for muscles.

Pubis: One of the three sections of the hip bone located at the front, coming together at the pubic symphysis, it plays a key role in supporting pelvic organs.

Acetabulum:

A cup-shaped cavity on the lateral surface of the pelvis where the femur (thigh bone) connects with the hip bone, forming the hip joint