Introduction and hypothesis: The aim of this study was to investigate the applicability and reproducibility of perineal ultrasound (US) in the evaluation of the pubococcygeal muscle (PCM) activity in urinary incontinent women.
Methods: Thirty women were assessed twice by two examiners who measured the angle between the lateral bundles of the PCM. The 2D US on coronal view evaluated the PCM performance during squeezing, straining, and resting.
Results: There was significant correlation (p ≤ 0.001) in all measurements to both examiners, except for the contraction on their second assessment. The images showed asymmetries of muscle volume and activity. Five women (16.7%) had difficulty to rest after squeezing or straining, six (20%) first opened the muscle bundles when asked to squeeze them, and eight (26.7%) had no movement during different moments.
Conclusions: The 2D perineal US on coronal view is useful to evaluate PCM activity. It is easily applicable and reproducible.