The Mid-Urethral Sling Tensioning (MUST) Trial

The MUST trial was a multi-centred randomized controlled trial that recruited from September 2015 to December 2017. With collaborators at 4 sites in Western Canada, 318 women were randomized to have their retropubic mid-urethral sling tensioned by either a Mayo Scissor spacer or fixed-loop help by a Babcock clamp. The primary outcome was rate of abnormal bladder outcomes – a composite of urinary retention, persistent incontinence, and repeat surgery.

The study found that abnormal bladder outcomes were less common in the group of women who had their mid-urethral sling tensioned with a Babcock clamp. There was no difference in rates of cure of stress incontinence between the two groups.

The study was presented at the September 2019 joint AUGS/IUGA Meeting in Nashville, Tennessee. The study will be published in the September 2020 issue of Obstetrics & Gynecology and is featured in September’s Green Journal Editor Pick podcast by an interview with the Principal Investigator, Dr. Erin Brennand. The article can be downloaded free of charge as an Open Access publication from the Green Journal’s website.

The study authors would like to acknowledge the women who participated in this trial. Your time and willingness to take part in research allowed us to contribute a meaningful piece of information for surgeons who treat stress urinary incontinence. This will allow us to better counsel women who are considering these surgeries in the future. Thank you!