On May 20, 1901, I presented for the consideration of the Johns Hopkins Medical Society a brief paper1 entitled "A New and Better Method of Opening and of Draining the Bladder in Women."
The method advocated consists in placing the patient in the knee-breast posture and then letting air into the bladder through a catheter or a speculum. If the posterior vaginal wall is now lifted up so as to expose the entire anterior vaginal wall from cervix to urethra, a suitably curved knife may be plunged through the vesico-vaginal septum into the air-distended bladder, and if the knife is sharpened on both edges the cut can easily be lengthened fore and aft from the cervix to the urethra, if it is desirable to make such a large incision. An artificial anemia of the bladder is induced by this posture and whatever blood escapes from the cut runs down
KELLY HA. THE ADVANTAGES OF THE KNEE-CHEST POSTURE IN SOME OPERATIONS UPON THE VESICAL END OF THE URETERS.. JAMA. 1902;XXXIX(6):291-293. doi:10.1001/jama.1902.52480320001001