B.AnthropoidPelvicInlet:Thistypeofpelvisischaracterizedbyalong,narrow,ovalinlet with an extended and narrow anterior.Posteriorsegment:Thistype of pelvis hasa posteriorsegment,awidesacrosciaticnotch,andalong,narrow sacrum.Side walls:Straight side walls are characteristicof theanthropoid pelviswhoseinterspinousandintertuberous diametersarelessthanthose of the average gynecoid pelvis.A medium bonestructure is usual.2025/10/2111
2025/10/21 11 B. Anthropoid Pelvic Inlet: This type of pelvis is characterized by a long, narrow, oval inlet with an extended and narrow anterior. Posterior segment: This type of pelvis has a posterior segment, a wide sacrosciatic notch, and a long, narrow sacrum. Side walls: Straight side walls are characteristic of the anthropoid pelvis, whose interspinous and intertuberous diameters are less than those of the average gynecoid pelvis. A medium bone structure is usual
C. Platypelloid PelvicInlet:This type of pelvis has a distinct oval inlet with a very wide,roundedretropubicanglePosteriorsegment:Thistypeofpelvishasaa wider,flat posterior segment.Thesacrosciaticnotchisnarrowandhasanormalsacral inclination, although it is often short.Thesubpubic arch is verywideandSide walls:The side walls are straight,with wide interspinous andintertuberous diameters.金2025/10/2117
2025/10/21 12 C. Platypelloid Pelvic Inlet: This type of pelvis has a distinct oval inlet with a very wide, rounded retro pubic angle Posterior segment: This type of pelvis has a a wider, flat posterior segment. The sacrosciatic notch is narrow and has a normal sacral inclination, although it is often short. The subpubic arch is very wide and Side walls: The side walls are straight,with wide interspinous and intertuberous diameters