Abdomen, Pelvis & Perineum
All of the following are features of flat type of pelvis except (AIPG 2010)
|A||Narrow subpubic angle|
|B||Short concave sacrum|
|C||Divergent side walls|
|D||Wide sciatic notch|
Narrow subpubic angle
• Gynecoid: Ideal shape, with round to slightly oval (obstetrical inlet slightly less transverse) inlet: best chances for normal vaginal delivery.
• Android: triangular inlet, and prominent ischial spines, more angulated pubic arch.
• Anthropoid: inlet transverse is greater than inlet obstetrical diameter.
• Platypelloid: Flat inlet with shortened obstetrical diameter.