Bone
Hip bone (os coxae)
Ilium + ischium + pubis
High-yield
The three parts fuse at the acetabulum; the ischial tuberosity bears weight when seated; ASIS and pubic tubercle anchor the inguinal ligament.
Overview
A large irregular bone formed by fusion of the ilium, ischium, and pubis at the acetabulum, joining the lower limb to the axial skeleton at the pelvis.
Reference facts
- Bone type
Irregular (flat)
- Key landmarks
Acetabulum; Iliac crest; Anterior superior iliac spine (ASIS); Ischial tuberosity; Ischial spine; Pubic tubercle; Greater and lesser sciatic notches; Obturator foramen
- Articulations
Femur (hip joint); Sacrum (sacroiliac joint); Opposite hip bone (pubic symphysis)