Correlation between the posterior vaginal wall and apex in pelvic organ prolapse

OBJECTIVE: The aim of our study is to reveal the correlation between the posterior vaginal wall and apex in pelvic organ prolapse. METHODS: We retrospectively reviewed the records of all new patient visits to a urogynecology clinic between January 2013 and December 2015. RESULTS: Four hundred five cases were enrolled in our study. When all POP stages were included, the Bp (pelvic organ prolapse quantification point) had a moderate correlation with the C (Pearson's r=0.419; P<0.001). Cases where Bp was stage 3 and above presented strong positive correlations with C (Spearman's ρ=0.783; P<0.001). Cases where C was stage 3 and above presented also strong positive correlations with Bp (Spearman's ρ=0.718; P<0.001). CONCLUSION: Posterior vaginal wall prolapse and apical prolapse were correlated with each other, and this correlation was more prominent as stage increased. Therefore, when admitting a patient suspected of posterior vaginal wall prolapse or apical prolapse, it is necessary to evaluate both conditions. Especially in cases more severe or equal to stage 3, it is a must to suspect both conditions as the 2 are strongly correlated.