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Pelvis Diameter meas

Doll & Pelvis

True conjugate (pelvic inlet) 11.5cm (usually 1.5-2cm less than diagonal)
Obstetric conjugate (pelvic inlet) 0.5cm less than true
Oblique diameter of pelvic inlet 12.5cm
Diagonal conjugate (pelvic inlet) 13cm
Transverse diameter (pelvic inlet) 13cm
AP diameter (pelvic cavity) 12.5cm
Transverse diameter (pelvic cavity) 12.5cm
Oblique diameter (pelvic cavity) 13.0cm
AP diameter (pelvic outlet) 10cm but can be enlarged to 12.5cm during labour
Transverse diameter (pelvic outlet) 11.5cm
Diameter b/w ischial spines (pelvic outlet) 10.5cm
Oblique diameter (pelvic outlet) 12.0cm
Suprapubic angle that is ideal 85-90 degrees
Created by: IonaDel
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