Vaginal axis on MRI after unilateral and bilateral sacral hysteropexy: a controlled study

The objective of this study was to evaluate the vaginal position on magnetic resonance imaging (MRI) after bilateral abdominal sacral hysteropexy (BASH) and classical abdominal sacral hysteropexy (ASH) and to investigate which method keeps the vagina the most proximate to its original anatomical position. Ten patients, with 10 having BASH, 10 ASH and 10 being nulliparous, were compared. The angle between the vagina and the pubococcygeal plate, the angle between the upper and lower vaginal segments, the distance between the posterior fornix and the 2nd vertebra and the distances between the lateral fornices and spina ischiadica were measured on MRI. A p value less than .05 was considered statistically significant. The distance between the vaginal axis and the left spina ischiadica was greater in the ASH group compared to the control and the BASH group (p = .011, .047), while it was similar between the BASH group and the control individuals (p = .473). The angle between the upper and lower vaginal segments was greater in the ASH group compared to the control group (p = .004), while no significant difference was found between the BASH and control groups (p = .112). BASH keeps the vaginal axis at a more proximate location to its original anatomical position. IMPACT STATEMENT What is already known on this subject: In pelvic reconstructive surgery; the anatomic correction serves the functional results. What the results of this study add: On MRI examination bilateral abdominal sacral hysteropexy (mimicking uterosacral ligament), keeps the vagina closer to the original anatomic position than classical abdominal sacral hysteropexy. Hence functional outcomes could be better, especially in the long term. What the implications are of these findings for clinical practice and/or further research: This study may be of interest for clinicians in terms of different methods for pelvic floor surgery and may be of interest for researchers to investigate the relationship between anatomic position and functional outcomes especially in younger patients.