Each hip bone (or pelvic bone) is itself formed from three bones fused together. These are:

• the ilium - the bony part at the side of the hip,
• the ischium - on which we sit (pronounced iss-kium), and
• the pubis - at the front.

These all join at the socket of the hip joint, the acetabulum (pronounced asset-abulum).

(We'll look at the hip joint in more detail later on.)