Pelvic girdle

Pelvic Girdle

Made of two coxae, the sacrum, and the coccyx. It supports and balances the trunk, protects pelvic organs, and connects trunk to lower limbs.

Coxae (2)

Large hip bones formed by fusion of the ilium, ischium, and pubis. They articulate with sacrum and femur to form the pelvis and hip joint.

Obturator foramen

Large hole in each coxa closed mostly by a membrane. It reduces bone weight and allows nerves/vessels to pass through.

Acetabulum

Cup-shaped depression on each coxa. It holds the head of the femur to form the hip joint and transfer weight.

Iliac crest

Curved upper ridge of the ilium. It's a muscle attachment site for trunk and arm movement.

Greater sciatic notch

Large notch below the iliac spine. It serves as a pathway for nerves and blood vessels to reach the back of the leg.

Ischial tuberosity

Rough, thickened part of ischium that you sit on. It serves as an attachment for ligaments and thigh/leg muscles.

Pubic symphysis

Cartilage joint connecting the left and right pubic bones. It joins the two coxae in front and allows slight movement.