Pelvic shape predisposes for pelvic organ prolapse: a geometric morphometry study.

Area of Science:

• Anatomy and biomechanics of the female pelvis.
• Pelvic floor disorders and their etiological factors.

Background:

• Pelvic organ prolapse (POP) is a common condition affecting adult women.
• Identifying predictive risk factors for POP is crucial for prevention and management.

Purpose of the Study:

• To determine if specific soft tissue and bony pelvic morphological features predict the development of POP.
• To investigate the relationship between pelvic shape and POP incidence in adult women.

Main Methods:

• A case-control study comparing parous women with POP, parous women without POP, and nulliparous women.
• Magnetic resonance imaging (MRI) was used to collect pelvic and urogenital hiatus landmarks.
• Geometric morphometry and principal component analysis were employed to analyze pelvic shape.

Main Results:

• Significant differences in combined soft tissue and pelvic shape were found between groups.
• Women with POP had a mediolaterally wider bony pelvis with shorter anteroposterior and craniocaudal diameters compared to controls.
• These findings were consistent in both primary and secondary datasets.

Conclusions:

• Pelvic shape is a significant factor contributing to the risk of postpartum POP.
• Morphological characteristics of the bony pelvis can serve as predictive markers for POP development.