Bones of the Pelvic Girdle

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transverse lines

anterior surface of the sacrum, connects pairs of foramina

acetabulum

area where the three os coxae bones connect, large articulation indentation

promontory

area where the vertebrae connects, between alae, flat spot

obturator foramen

big hole on os coxae

ilium

blade portion of os coxae

ischiopubic ramus

bridge of bone connect pubis to the ischium

arcuate line

bumped up ridge of bone extending from the auricular surface to the pubic bone

acetabular fossa

center of articulation point, surrounded by the lunate surface

auricular surface

ear or bean shaped rough surface on the posterior side of the ilium

dorsal walls

either side of median crest, between crest and foramina

pubic symphysis

flat face of the pubis bone

superior articular facets

flat portions / protrusions facing the posterior on the sacrum, near promontary

preauricular sulcus

groove below auricular surface and above greater sciatic notch

os coxae

hip, pelvis

cornula

horns pointing up on the tail bone

lunate surface

in the acetabulum, smoother crescent shape

iliac fossa

indentation on the ilium, on the opposite side of the acetabulum

obturator groove

indentation the by the big hole

greater sciatic notch

notch above the ischial spine

lesser sciatic notch

notch below ischial spine, above ischium

posterior inferior iliac spine

point bit on the ilium, same side as the ischium bone, bottom pointy bit

posterior superior iliac spine

point bit on the ilium, same side as the ischium bone, top pointy bit

anterior inferior iliac spine

point bit on the ilium, same side as the pubis bone, bottom pointy bit

anterior superior iliac spine

point bit on the ilium, same side as the pubis bone, top pointy bit

ischial spine

pointy bit just above the ischium

median crest

ridge between the sacral foramina

sacroiliac joint

rough spots on the side of the sacrum, connects to the auricular surfaces of the ilium

ischial tuberosity

rough, oval shaped portion of the ischium, below lesser sciatic notch

anterior sacral foramina

series of holes on the sacrum

coccyx

tail bone

pubis

triangular shaped piece, opposite the ischium

iliac crest

very top, broad edge of the ilium

ischium

widest part of os coxae, part that you sit on

alae

wings


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