Pelvimetry is the measurement of the female pelvis. It can theoretically identify cephalo-pelvic disproportion, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal.

1. MUKESH SAH, MD
POST GRADUATE MEDICAL INTERN
GOODSAM MEDICAL CENTER

2.  Anteroposterior Diameters
 Suboccipitobregmatic : 9.5cms well flexed head (ROT; LOA)
 Occipitofrontal : 11cms  deflexed head (ROP; LOP)
 Supraoccipitomental :13.5cms  brow presentation
 Submentobregmatic : 9.5cms  face presentation
 Transverse Diameters
 Biparietal : 9.5cms
 Bitemporal : 8cms

9. DATA FINDINGS
Forepelvis (pelvic brim) Round
Diagonal Conjugate > 11.5cms
Symphysis Average Thickness, parallel to sacrum
Sacrum Hollow, Average inclination
Side Walls Straight
Ischial Spines Blunt
Interspinous Diameter > 10cms
Sacrosciatic Notch 2.5-3 finger breadths
Subpubic angle 2 fingerbreaddths
Bituberous Diameter 4 knuckles (> 8cms)
Coccyx Mobile
AP diameter of outlet > 11cms