Prevention of urethral obstruction in dogs that are rapid stone formers and cannot be controlled medically Prepubic urethrostomy - same technique as prepubic urethrotomy. Less cavernous tissue to incise. Urethra is wide and larger in diameter at the scrotum - stones pass easier. Dog learns to urinate like a female dog, is continent Elliptical skin incision is made around scrotum and scrotal skin is removed. Do not take out too much skin at base of scrotum.
Castration is performed.
Incise connective tissue over urethra and retract the penile muscle laterally to expose ventral urethra. Incise urethra 3-4 cm. This incision will drip blood for 3-5 days, usually stops the 5th day after surgery Perineal urethrostomy Not commonly done in the dog because of problems with urine scald in perineal area. Very popular in cat. Clinical signs - frequent attempts to urinate.