[Causes of failure of the surgical treatment of urethral strictures]

The work describes and analyzes main causes of failure of treatment of strictures of the posterior parts of the urethra in 199 patients. They were: tunnelization and canalization, lack of special instruments, not complete dissection of scarry tissues in the stricture zone, bad observation of terms between operations, the use of catgut and silk as a suture material with great amount of stitches, prolonged stay of the drain in the urethra, early bougienage of the urethra.