Radius and Ulna Bones Anatomy - Introduction
Hip Bone Anatomy – Introduction
- Each os coxa bone (hip bone) is made up of three bones, which fuse during early adult-hood.
- The ilium bone forms the superior portion of the os coxa, the ischium bone the lower posterior portion, and the pubic bone (pubis) the lower anterior portion.
- Three articulation (joint) sites are found on each os coxa.
- The two os coxae meet anteriorly at the pubic symphysis joint and converge posteriorly with the sacrum at the sacroiliac joints. Laterally, deep sockets called acetabula accept the heads of the femurs to form the hip joints.
- Together, the right and left os coxae form the pelvic girdle. Together, the pelvic girdle, sacrum, and coccyx (final 3-5 vertebrae) make up a ring of bones called the pelvis (bony pelvis).
- The bony pelvis protects the soft organs of pelvic cavity (bladder, lower colon, rectum, and reproductive organs).
- It also provides attachment points for many muscles that control the movements of the back, abdomen, and femur bones.