Analysis of long-term structural failure after native tissue prolapse surgery: a 3D stress MRI-based study

Area of Science:

• Pelvic floor reconstructive surgery
• Female pelvic medicine and reconstructive surgery
• Urogynecology

Background:

• Pelvic organ prolapse (POP) recurrence affects a significant number of women post-surgery.
• Identifying long-term structural failure sites is crucial for improving surgical outcomes and patient satisfaction.
• Native-tissue prolapse surgeries aim to restore pelvic anatomy and function.

Purpose of the Study:

• To identify specific postoperative structural failure sites associated with long-term pelvic organ prolapse recurrence.
• To investigate the association between these failure sites, patient symptoms, and satisfaction.
• To compare anatomical measurements in women with and without prolapse recurrence.

Main Methods:

• 3D stress MRI and validated questionnaires were used to assess 31 women 12.7 years after native-tissue prolapse surgery.
• Recurrence was defined using the Pelvic Organ Prolapse Quantification System (POP-Q).
• Key measurements included vaginal length, apex location, urogenital hiatus (UGH), and levator hiatus (LH) at rest and strain.

Main Results:

• 42% of women experienced long-term prolapse recurrence.
• Impaired mid-vaginal paravaginal support, longer vaginal length, and enlarged urogenital hiatus (UGH) were significantly associated with recurrence.
• Women with bothersome bulge symptoms showed significantly larger UGH and levator hiatus (LH) dimensions.
• Patient satisfaction was high and not significantly different between success and recurrence groups.

Conclusions:

• Abnormal low mid-vaginal paravaginal support (Level II), long vaginal length (Level II), and large urogenital hiatus (Level III) are associated with long-term prolapse recurrence.
• High patient satisfaction is achievable irrespective of anatomical recurrence.
• Pelvic floor hiatus enlargement is linked to bothersome bulge symptoms, highlighting its clinical relevance.