Pelvic Girdle Flashcards
what is the purpose of the pelvic girdle?
anchor LE to axial skeleton; base for LE movement
what are the bones involved in the pelvic girdle?
sacrum and innominate bones
what is the sacrum composed of?
5 fused vertebrae
what are the landmarks of the sacrum?
Base
Apex
Median sacral crest
what are the 3 innominate bones?
ilium, ischium, pubis
what are the landmarks of the innominate bones?
ASIS
PSIS
Pubic symphysis
Ischial tuberosities
Iliac crests
what are the 2 joints of the pelvic girdle?
sacroiliac joints and pubic symphysis
explain what kind of joint and the bones involved in sacroiliac joints
Bones: sacrum, R/L ilium
Diarthrodial (freely moving)
explain what kind of joint and the bones involved in the pubic symphysis
Bones: R/L pubis
Amphiarthrodial (limited movement)
what pelvic girdle movements occur in the sagittal plane?
Ant rotation
Post rotation
what pelvic girdle movement occurs in the frontal/coronal plane?
R/L lateral rotation
what kind of pelvic girdle movement occurs in the transverse plane?
R/L transverse rotation
what happens with ant rotation of the pelvis?
ASIS ↓ ; PSIS ↑
Hip flexion / lumbar extension
what happens with post rotation of the pelvis?
ASIS ↑ ; PSIS ↓
Hip extension / lumbar flexion
what happens with right lateral rotation of the pelvis?
L ASIS + PSIS ↑
R ASIS + PSIS ↓