Effect of prior hysterectomy on the anterior and posterior vaginal compartments of women presenting with pelvic organ prolapse.

To describe the effects of hysterectomy on the anterior and posterior vaginal compartments and specific pelvic organ prolapsed quantification (POP-Q) data points.In a retrospective case-control study, data were analyzed from patients presenting at a urogynecologic center in Manhasset, USA, with urogenital prolapse between January 1, 2008, and December 31, 2010. Patients who underwent hysterectomy for indications not including prolapse were compared with age- and parity-matched women without prior hysterectomy. POP-Q points were measured and converted to stages for each vaginal compartment. The t test, Wilcoxon rank sum, and Fisher exact tests were used to compare normally distributed variables, nonparametric data, and categoric variables, respectively.Seventy-one patients who underwent prior hysterectomy were matched to 71 patients with intact uteri. Women with prior hysterectomy had significantly greater prolapse at POP-Q point Bp and worse overall posterior compartment prolapse compared with those without prior hysterectomy. Women who underwent hysterectomy were more likely to have stage 2 or greater prolapse (OR 2.6, 95% CI, 1.3-5.2; P=0.01).When matched for age and parity, women with prior hysterectomy had significantly greater posterior compartment prolapse compared with those without. Prior hysterectomy had no significant effect on the anterior vaginal compartment.