4 bones of pelvis
L & R coxa
Coccyx
Sacrum
How coccyx assists birth
Flexes backwards to enlarge pelvic outlet
Pelvic landmark for ‘stations’
Ischial Spines (- above/+ below)
Significance of ischial spines
Narrowest diameter of pelvis
Hormone softens public symphysis
Relaxin
Significance of curve of carus
Complex curve
Upright positions give more space in pelvis for baby to navigate it