Celsus, De Medicina
W. G. Spencer, Ed.

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[p. 431] time the patient pulls upon his own hams. Whether one or two men hold the patient, they press downwards with their chests upon the patient's shoulders. Hence it results that the hollow between the iliac regions above the pubes is outstretched without any folds, and as the bladder is crammed into a narrow space the calculus can easily be seized hold of. In addition, moreover, two strong men should be put to stand at the sides, and they by standing there prevent the man or men who holding the boy from slipping. Then the surgeon having carefully pared his nails and anointed his left hand, gently introduces two fingers, the index and the middle, first one and then the other, into the anus; next he places the fingers of his right hand upon the hypogastrium, but lightly, lest if the two sets of fingers should press around the calculus with any force, the bladder may be injured. And in this procedure we must not act with haste, as in most cases, but so that safety is the first consideration; for an injury to the bladder causes spasm with danger of death. And the stone is first sought for about the neck of the bladder; when found there it is expelled with less trouble. And this is why I said there should be no operation except when the stone has been recognized by its special signs. But if the stone is not found at the neck of the bladder, or if it has slipped backwards, the fingers are placed against the base of the bladder, while the surgeon's right hand too is placed above the stone and gradually follows it downwards. When the stone has been found, and it must fall between his hands, it is guided downwards with special care the smaller and the smoother it is, lest it escape. This is that the bladder may not