Knot in urethral catheter due to improper catheterization technique.
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008591:Meningomyelocele / Q000150:complications; D014521:Urethra; D001750:Urinary Bladder, Neurogenic / Q000628:therapy; D014546:Urinary Catheterization / Q000009:adverse effects*