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Comparison of two methods for measuring the pubococcygeal line from sagittal‐plane magnetic resonance imaging

The pubococcygeal line (PCL) is an important reference line for determining measures of pelvic organ support on sagittal‐plane magnetic resonance imaging (MRI); however, there is no consensus on where to place the posterior point of the PCL. As coccyx movement produced during pelvic floor muscle (PFM) contractions may affect other measures, optimal placement of the posterior point is important. This study compared two methods for measuring the PCL, with different posterior points, on T2‐weighted sagittal MRI to determine the effect of coccygeal movement on measures of pelvic organ support in older women.