types of pelvis

TYPES OF PELVIS GYNAECOID ANTHROPOID ANDROID PLATYPELLOID 1.Gynaecoid pelvis: (50%) It is commonly known as the female pelvis because that type occurs most frequently in women. Most suitable for childbirth. Wider brim. Ischial spines are blunt Sub pubic angle is 90º 2.Anthropoid pelvis: (25%) It favors a posterior position of the fetus. Oval in shape Transverse diameter is shorter Seen in tall women with narrow shoulders 3.Android pelvis: (20%) It is commonly known as male pelvis because it occurs more frequently in men . Heart shaped brim Anterior posterior diameter is shorter Transverse diameter is wider Childbirth is difficult 4.Platypelloid (flat) pelvis: (5%) This type of pelvis is rare. Kidney shaped brim Anterior posterior diameter is smaller Transverse diameter is wider Not conductive to vaginal delivery