Risk Factors Associated with Adnexal Torsion after Hysterectomy.

ABSTRACT Study Objective To identify preoperative and intraoperative risk factors for adnexal torsion after hysterectomy, and to estimate the incidence of the disease in the modern-day era of laparoscopic surgery. Design Retrospective nested case-control study. Setting Large urban medical system. Patients Eighty-nine female patients ages 17 to 51. Interventions Patients underwent ovarian-sparing hysterectomy. Measurements and Main Results The estimated incidence of ovarian torsion after hysterectomy was 0.5% (46/8538 ovarian-sparing hysterectomies). The following variables were found to be associated with adnexal torsion after hysterectomy in an adjusted logistic regression: laparoscopic or laparoscopic-assisted approach to hysterectomy vs any other approach (odds ratio [OR], 3.36; 95% confidence interval [CI], 0.86–13.23); younger age at the time of hysterectomy (17–40 years) vs older age (41–51 years) (OR, 3.45; 95% CI, 1.33–8.97); and a gynecologic history significant for endometriosis (OR, 4.07; 95% CI, 1.04–15.88). Conclusion There is an association between laparoscopic approach to hysterectomy, younger age at time of hysterectomy, and a history of endometriosis with subsequent risk of adnexal torsion. Providers should have a heightened index of suspicion for adnexal torsion after hysterectomy in patients presenting with acute-onset abdominal pain who underwent laparoscopic hysterectomy at a younger age.