Bony Pelvis Formation and Anatomy

Hip Bone Structure

• The hip bone is formed by three parts: ilium, ischium, and pubis.

Iliac Crest

• The iliac crest is located at the superior border of the ilium.

Hip Joint

• The head of the femur articulates with the acetabulum to form the hip joint.

Sacroiliac Joint

• The sacroiliac joint is formed by the articulation of each hip bone with the sacrum.

Hip Bone Anatomy

• The deep socket on the lateral surface of the hip bone is called the acetabulum.

Sacroiliac Joint Formation

• The sacroiliac joint is formed by the articulation of the sacrum with the posterior surface of the ilium.

Iliac Tuberosity

• The iliac tuberosity lies above the auricular surface for the articulation with the sacrum.

Sacrum Formation

• The sacrum is formed by the fusion of 5 sacral vertebrae.

S1 Vertebra

• The anterior projecting border of the S1 vertebra is known as the promontory.

Ischium Bone

• The ischium bone has a body and two rami (superior and inferior).