Pelvis Ligaments Sacrospinous ligament骶棘韧带 Extend from the lateral border of the sacrum and coccyx to the spine of the ischium 2. Sacrotuberous ligament骶结节韧带 Extend from the posterior aspect of the lower 3 sacral vertebrae to the ischial tuberosity
Pelvis ▪ Ligaments 1. Sacrospinous ligament 骶棘韧带 Extend from the lateral border of the sacrum and coccyx to the spine of the ischium 2. Sacrotuberous ligament 骶结节韧带 Extend from the posterior aspect of the lower 3 sacral vertebrae to the ischial tuberosity
quina ligament Anterior Sacrospinal lac ligament fascia Sacrotuberal ligament Obturator membrane Figure 2-16. Ligaments of the pelvis
Pelvis Pelvic divisions (iliopectineal line髂耻线) False pelvis (pelvis major Ture pelvis(pelvis minor) bony birth canal the pelvic inlet the pelvic out let and the pelvic cavity
Pelvis ▪ Pelvic divisions (iliopectineal line 髂耻线) 1. False pelvis (pelvis major) 2. Ture pelvis (pelvis minor) Bony birth canal the Pelvic inlet, the pelvic out let and the pelvic cavity
Pelvis Types of pelvis The gynecoid type(女型骨盆) round slightly ovoid or elliptical inlet. adequate sacrosciatic notch. wide interspinous diameters(210cm).52%-589% The platypelloid type(扁平型骨盆) distinct oval inlet. very wide subpubic arch 23.2%-29%
Pelvis ▪ Types of pelvis 1. The gynecoid type (女型骨盆) round, slightly ovoid or elliptical inlet. adequate sacrosciatic notch. wide interspinous diameters(≥10cm). 52%-58.9% 2. The platypelloid type (扁平型骨盆) distinct oval inlet. very wide subpubic arch. 23.2%-29%