Contracted midpelvis Midpelvis:from inferior margin of the symphysis pubis through the ischial spines,touches the sacrum near the junction of the 4th and 5th vertebrae
Contracted midpelvis Midpelvis: from inferior margin of the symphysis pubis through the ischial spines,touches the sacrum near the junction of the 4th and 5th vertebrae
Contracted midpelvis Criteria for contraction: I (marginal contraction):bi-ischial spine diameter 10 cm,anteroposterior diameter 10.5cm; ll (comparative contraction):bi-ischial spine diameter 8.59.5cm,anteroposterior diameter 9.0~10 cm. Ill (absolutely contraction):bi-ischial spine diameter <8.0 anteroposterior diameter ≤8.0
Contracted midpelvis Criteria for contraction: Ⅰ（marginal contraction）: b i - i s c h i a l spine diameter 10 cm, anteroposterior diameter 10.5 cm; Ⅱ（comparative contraction）: bi-ischial spine diameter 8.5 ～ 9.5cm, anteroposterior diameter 9.0～10 cm. Ⅲ（absolutely contraction）: bi-ischial spine diameter ≤8.0 anteroposterior diamete r ≤8.0
outlet contraction Criteria for contraction: I (marginal contraction) intertuberous diameter7.5 cm,anteroposterior diameter 10.5cm,intertuberous diameter posterior-sagital diameter15cm; ll comparative contraction):in tertu berous diameter6.0-7.0 cm,anteroposterior diameter 9- 10cm,intertuberous diameter posterior-sagital diameter12-14cm; Ill (absolutely contraction):intertuberous diameter 5.5 cm,anteroposterior di a m e ter<8.5cm, intertuberous diameter posterior-sagital diameter ≤11cm
outlet contraction Criteria for contraction: Ⅰ（marginal contraction） intertuberous diameter7.5 cm, anteroposterior diameter 10.5cm, intertuberous diameter + posterior–sagital diameter15cm; Ⅱ （ comparative contraction ） : i n t e r t u b e r o u s di ame te r6.0-7.0 cm, anteroposterior di ame te r 9- 10cm, intertuberous diameter + posterior–sagital diameter12-14cm; Ⅲ（absolutely contraction）: intertuberous diameter ≤ 5.5 cm, anteroposterior d i a m e t e r ≤ 8.5cm, intertuberous diameter + posterior–sagital diameter ≤ 11cm
classification ▣Funnel shaped pelvis transversely contracted pelvis without concomitant midplane contraction is rare ① 男型 类人猿型
classification Funnel shaped pelvis transversely contracted pelvis without concomitant midplane contraction is rare
Funnel shaped pelvis feature: inlet is normal bi-ischial diameter <10cm intertuberous diameter <9cm. 漏斗骨盆出口 subpubic angle<90 transverse outlet+posterior-sagittal diameter<15cm
Funnel shaped pelvis feature： inlet is normal bi-ischial diameter <10cm intertuberous diameter <9cm subpubic angle<90 transverse outlet+posterior-sagittal diameter<15cm