urethrovaginal fistula urethrovaginal fistula a urethrovaginal fistula is an abnormal passageway that may occur the urethra and the vagina. it is a sub-set of vaginal fistulas. it results in urinary incontinence as urine continually leaves the vagina. it can occur as an obstetrical complication, catheter insertion injury or a surgical injury. it is also called a urethral fistula and may be referred to as uvf. they are quite rare. in the developed world, they are typically due to injuries due to medical activity.