For a number of years this clinic has been interested in applying roentgenometric methods to the problems of pelvic mensuration. From time to time communications have appeared describing our experience with methods which we have developed for taking both pelvic inlet and lateral pelvis roentgenograms.1
It is my purpose in this paper to emphasize again the great usefulness of roentgen pelvimetry and to describe an improved method of superior strait pelvimetry which can be easily and rapidly carried out.
Up until the time when we adopted the present technic we2 were using a somewhat similar method described latterly in 1927, which depended on two main factors: first, the position of the patient, it being necessary that the superior strait be made exactly parallel with the sensitive plate below, and, second, the interposition of a lead scale in the plane of the superior strait following the removal of the