Have you know of this possible option ( in lieu of a suprapubic catheter) :
"Option is not to reconstruct the urethra at all, and instead make a bypass for the urine instead. Here, the urethra is opened under the scrotum, and a paddle of skin sewn to the urethra. Thus, with the bulbar urethra sewn to the skin, the urine can easily come out. However, the patient will need to sit to urinate. This is a reasonable solution for the severely scarred urethra in a more elderly patient.:"