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  • Title: Moment of inertia as a means to evaluate the biomechanical impact of pelvic organ prolapse.
    Author: Brandão S, Da Roza T, Mascarenhas T, Duarte S, Ramos I, Parente M, Jorge RN.
    Journal: Int J Urol; 2013 Jan; 20(1):86-92. PubMed ID: 23126557.
    Abstract:
    OBJECTIVES: To present an alternative measure (moment of inertia) to describe the anatomical features of the pelvic organ prolapse. METHODS: A total of 30 women (21 diagnosed as having pelvic organ prolapse and 9 as controls) were evaluated by clinical scales and magnetic resonance imaging. Imaging biometric measures were carried out. Moment of inertia, pubovisceral muscle thickness and area, and levator hiatus anterior-to-posterior and lateral measures were compared by means of non-parametric tests, as well as their correlation with demographic features of the two sample groups. RESULTS: Moment of inertia, muscle area and levator hiatus diameters were statistically different between patients and controls. Furthermore, they were also well correlated with prolapse-associated factors, such as the number of vaginal deliveries and age, as well as Pelvic Organ Prolapse Quantification system and imaging staging of levator ani defects. CONCLUSIONS: Moment of inertia can be used as a new parameter to evaluate pelvic floor damage resulting from prolapse.
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