![]() ![]() Every other week there seems to be a new treatment promising to make your penis longer and harder or your. These differences may contribute to observed racial differences in obstetric outcomes and to the development of pelvic floor disorders. Boys and men continue to worry that their penis is too small. In addition, after vaginal delivery, white women demonstrate less pelvic floor mobility. White women have a wider pelvic inlet, wider outlet, and shallower anteroposterior outlet than African-American women. This difference was not observed among women who had sustained an obstetric sphincter tear. Full vinyl polysiloxane casts of the vagina were obtained from 23 Afro-American, 39 Caucasian and 15 Hispanic women in lying, sitting and standing positions. In addition, among women who delivered vaginally without a sphincter tear, African-American women had more pelvic floor mobility than white women. There were no significant differences between racial groups in interspinous diameter, angle of the subpubic arch, anteroposterior conjugate, levator thickness, or levator hiatus. ![]() The outlet was also wider (mean intertuberous diameter 12.3+/-1.0 cm compared with 11.8+/-0.9 cm, P<.001). The pelvic inlet was wider among 178 white women than 56 African-American women (10.7+/-0.7 cm compared with 10.0.+0.7 cm, P<.001). Bony and soft tissue dimensions were measured and compared between white and African-American participants using analysis of variance, while controlling for delivery type and age. At 6-12 months postpartum, rapid acquisition T2-weighted pelvic MRIs were obtained. This study used data from 234 participants in the Childbirth and Pelvic Symptoms Imaging Study, a cohort study of 104 primiparous women with an obstetric anal sphincter tear, 94 who delivered vaginally without a recognized anal sphincter tear and 36 who underwent by cesarean delivery without labor. To use static and dynamic magnetic resonance imaging (MRI) to compare dimensions of the bony pelvis and soft tissue structures in a sample of African-American and white women.
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