👉 A perineostomy is a surgical procedure that involves replacing the urethra or urinary bladder with a prosthetic urethral passage. This type of surgery is often performed to treat problems such as urinary incontinence, pelvic organ prolapse, and kidney stones. The urethra is typically replaced by a urethral valve or tube, which allows urine to flow freely from the urethra into the bladder. However, some patients may require additional care after their perineostomy