The pelvic girdle (pelvis)

1
The pelvic girdle (pelvis)

• formed by two ossa coxae (hipbones)
• united anteriorly by the symphysis pubis and
  posteriorly to the sacrum and coccyx
• supports the weight of the body
• pelvic girdle also supports and protects the
  lower viscera

2
Each os coax actually consists of three separate
bones

• the ilium
• the ischium
• and the pubis

3
The ilium is the largest and uppermost of the
three pelvic bones
Greater sciatic notch
Acetabulum
4
The ischium is the posterior-inferior component
of the os coax
The ischial tuberosity is the bony projection
that supports the weight of the body in the
sitting position
5
The pubis is the anterior component of the os
coax.
6
Base of sacrum
Iliac crest
Anterior superioriliac spine
Ilium
Sacroiliac articulation
Pelvic inlet
Anterior inferioriliac spine
Acetabulum
Ischium
Obturator foramen
Symphysis pubis
Pubis
7
Sacroiliac articulation
Ilium
Obturator foramen
Ischium