Os Coxa

anterior superior iliac spine

Anterior border of the iliac crest

lesser sciatic notch

Between the ischial spine and ischial tuberosity

Pubic symphysis

Cartilage that joins the right and left pubic bones.

Sacrum auricular surface

Connection point between the ilium and the sacrum

arcuate line

Diagonal ridge of bone forms the inferior border of the iliac fossa

anterior inferior iliac spine

Inferior to the anterior superior spine

ischial spine

Inferior to the greater sciatic notch of the ilium

ischial tuberosity

Large bony projection from the ischium (Butt Bone)

iliac fossa

Large depression on the medial surface of the ilium provides an attachment point for a muscle

obturator foramen

Large opening found inferior to the acetabulum. Formed by portions of the ischium and pubis

Acetabulum

Large socket articulates with the head of the femur. Pubis, ilium and ischium all form it

Posterior superior iliac spine

Marks the posterior border of the iliac crest

Inferior ramus of pubis

Projection from the pubis joins with the inferior ramus of the ischium

Inferior ramus of ischium

Projection of bone from the ischium joins the inferior ramus of the pubis

Posterior inferior iliac spine

Projection seen just inferior to the sacrum articulating surface

iliac crest

Superior edge of the ilium.

Symphysial surface

Surface that forms one half of the joint called the pubis symphysis

Greater sciatic notch

deep notch located inferior to the posterior inferior iliac spine; allows the sciatic nerve to enter the thigh