Radiation Therapy After Artificial Urinary Sphincter Insertion Ups Urethral Atrophy Risk by admin_63069 | Jan 20, 2021 | News You Can Use Radiation therapy after artificial urinary sphincter (AUS) insertion in men who undergo radical prostatectomy is associated with an increased risk of urethral atrophy with recurrent urinary incontinence compared with men who receive radiation prior to AUS insertion.