- The pelvic bone is composed of the ilium, ischium, and pubis that have fused together.
- The pelvic bone articulates:
- with the femur distally, forming the hip (femoroacetabular) joint.
- the sacrum medially, forming the sacroiliac joint.
NOTES:
- The pelvic bone is also known as the coxal bone, the os coxa, the innominate bone, and the hip bone.
- The acetabulum of the pelvis is the socket of the hip joint. All three bones of the pelvic bone, the ilium, ischium, and pubis, unite at the acetabulum.
![Anterior view of the pelvic bone on the right side of the body.](https://learnmuscles.com/wp-content/uploads/2017/05/16-Os-coxa-anterior-3015-739x1024.jpg)
Anterior view of the pelvic bone on the right side of the body.
![Posterior view of the pelvic bone on the right side of the body.](https://learnmuscles.com/wp-content/uploads/2017/05/16-Os-coxa-posterior-4179-731x1024.jpg)
Posterior view of the pelvic bone on the right side of the body.
![Lateral view of the pelvic bone on the right side of the body.](https://learnmuscles.com/wp-content/uploads/2017/05/16-Os-coxa-lateral-3007-modified-731x1024.jpg)
Lateral view of the pelvic bone on the right side of the body.
![Medial view of the pelvic bone on the right side of the body.](https://learnmuscles.com/wp-content/uploads/2017/05/16-Os-coxa-medial-2981-794x1024.jpg)
Medial view of the pelvic bone on the right side of the body.