THE UROLOGY service of the General Hospital of México, D. F., is frequently confronted with patients suffering from traumatic or inflammatory stenosis, with partial loss of the urethra. Till recently we had been unable to offer a satisfactory solution to such patients. Near the end of 1950, a paper by A. W. Badenoch,1 an English surgeon, appeared wherein a new technique for the reconstruction of the urethra was explained. He called it the "pull-through operation," and I have denominated it the "invagination technique." Its author recommends it for post-traumatic stenosis and up to the time of publication had performed it on seven occasions upon five patients (two with reoperation), having obtained good results.
In summary, Badenoch's technique consists of a primary suprapubic cystostomy through which the proximal or posterior portion of the urethra is located. The patient is placed in the lithotomy position, and a metallic sound is introduced