Diferentes tipos de pelvis óseas en una muestra de fetos venezolanos Different types of Pelvis in Venezuelan fetal sample.

SUMMARY The results of a research in 61 human pelvis, belonging to Venezuelan foetal esqueletons, whose ages ranged from 20 to 40 weeks are reported. The research was performed in order to identify pelvis types, and its frequency in the sample. In this aim the fetuses were 10 % formol fixed, the tissues and muscles were carefully dissected and removed, afterwards the pelvis were classified according to sex, employing transverse and antero posterior pelvic diameters, pelvic walls characteristics, and sub pubic angle, those that allowed their anthropoid classification in android, gynecoid, and platypelloid. Obtaining in male fetuses (31 cases) android pelvis in 50 % of the sample, gynecoid and platypelloid 19 % on each of them, and anthropoid in 6%. In female pelvis (30 studied cases) was in a 54% of the cases type android, in 30 % of the cases gynecoid, 13% of cases anthropoid and 3 % of the cases