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)
Frequently asked questions
What type of bone is the hip bone (os coxae)?
The hip bone (os coxae) is an irregular (flat) bone.
What does the hip bone (os coxae) articulate with?
The hip bone (os coxae) articulates with the femur (hip joint); Sacrum (sacroiliac joint); Opposite hip bone (pubic symphysis).
What are the key landmarks of the hip bone (os coxae)?
Key landmarks of the hip bone (os coxae) include the acetabulum; Iliac crest; Anterior superior iliac spine (ASIS); Ischial tuberosity; Ischial spine; Pubic tubercle; Greater and lesser sciatic notches; Obturator foramen.