Comparison of dynamic features of pelvic floor muscle contraction between men with and without incontinence after prostatectomy and men with no history of prostate cancer

Aim: To compare features of pelvic floor muscle function between men with and without incontinence after prostatectomy and men with no history of prostate cancer. Methods: The study included men with incontinence postprostatectomy (PPI; n = 20), continent men postprostatectomy (PPC; n = 23) and a control group (CC; n = 20). Transperineal ultrasound imaging recorded motion associated with contraction of the striated urethral sphincter (SUS), puborectalis (PR) and bulbocavernosus (BC) muscles during maximal voluntary contraction (MVC), submaximal efforts, evoked coughing and bearing down. Anatomical landmark displacements were compared between groups and receiver operating characteristics were calculated to determine the threshold displacements that best differentiated PPI and PPC. Results: PPC demonstrated greater SUS, PR, and BC displacement than PPI during MVC (All: P