The practice of obstetrics, designed for the use of students and practitioners of medicine . ing the Transverse Diameter of the Pelvic points of the pelvimeter are placed on the palmar surfaces of the tips of the index-fingers. See diagram, upper left of illustration.—{From a photograph.) mation of the true conjugate by this plan can only be approximated, since itdepends upon so many variable quantities. The method of taking the heightof the symphysis is described on page 166. For determining the thickness ofthe symphysis the pelvimeter of Skutsch, or one of its modifications, may b
The practice of obstetrics, designed for the use of students and practitioners of medicine . ing the Transverse Diameter of the Pelvic points of the pelvimeter are placed on the palmar surfaces of the tips of the index-fingers. See diagram, upper left of illustration.—{From a photograph.) mation of the true conjugate by this plan can only be approximated, since itdepends upon so many variable quantities. The method of taking the heightof the symphysis is described on page 166. For determining the thickness ofthe symphysis the pelvimeter of Skutsch, or one of its modifications, may beused (Fig. 215). It can be roughly estimated, of course, by the thumb andfinger of the accoucheur (Fig. 213). The normal angle between the true conju-gate and the symphysis has been estimated at 105 degrees. After the physi-cian has made it a rule to combine internal pelvimetry with vaginal examina-tion, he will soon learn to recognize and appreciate departures from the normaltype. An important point, commonly misunderstood, is that the obstetric con- THE EXAMINATION OF PREGNANCY. 171. jugate is the smallest amount of available intrapelvic space in the antero-posterior diameter, whether measured from the true promontory or some otherpoint, as a false promontory ordisplaced lumbar vertebra. True Conjugate with Pelvimeters (Skutsch).—Many pelvimeters have beendevised for measuring the true instruments, as a rule, do not takecognizance of other internal instrumental methods for measuringthe true conjugate give practical results:viz., those of Skutsch and Farabeuf re-spectively. The measurement which theformer gives is known as the interno-external, and is not so accurate as thatobtained by the direct method with thelatter or Farabeufs instrument. (Seepage 172 and Fig. 214.) Eight years ex-perience with this instrument has satis-fied the author that it is the most accur-ate instrument for the purpose at presentin existence. The Skutsch pelvimeter
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectobstetrics, bookyear1
