Practical midwifery; handbook of treatment . walls?of the pelvis, if possible by the half-hand. 24G PRACTICAL MIDWIFERY. The height of the promontory above the brim, tlie length anddegree of inclination of the symphysis, the dei)th of the ilio-sacralnotches, and tlie degree of curvature of the iho-pectineal hue, theamount of curvature of the sacrum, and the length of the pelvicaxis as a whole should also be observed. The determination ofthese points is largely a matter of judgment, and dependent uponexperience; for which reason it should be the routine hal)it ofthe student to i:)ractise this e
Practical midwifery; handbook of treatment . walls?of the pelvis, if possible by the half-hand. 24G PRACTICAL MIDWIFERY. The height of the promontory above the brim, tlie length anddegree of inclination of the symphysis, the dei)th of the ilio-sacralnotches, and tlie degree of curvature of the iho-pectineal hue, theamount of curvature of the sacrum, and the length of the pelvicaxis as a whole should also be observed. The determination ofthese points is largely a matter of judgment, and dependent uponexperience; for which reason it should be the routine hal)it ofthe student to i:)ractise this examination upon every parturientwoman Avho comes within his observation; and he who adoptsthis rule for every normal pelvis in which the administration ofether makes it possible, will rarely fail to form a conclusive diag-nosis of the form of contraction with which he is dealing, whenconfronted by a contracted pelvis. Uxternal Measurements.—The external measurements of thepelvis can only be taken with accuracy by means of a ijelvimeter. Fig. 71.—The Pelvimeter. (Fig. 71). The distance betAveen the spines of the ilium is to bemeasured by placing the tips of the instrument against theanterior superior spines, just external to the origins of the recti-femoris muscles, and is normally, in American women, aboutten inches. The distance between the iliac crests is obtained byplacing the points against their external aspects, and then movingthem backward and forward until the point of greatest distanceis found. This diameter averages about ten and three-quarterinches. The external conjugate diameter is taken by so placingthe pelvimeter that one point is pressed against the upper edgeof the symphysis pubis, while the other rests in the median linebelow the spine of the fifth lumbar vertebra, a point which maybe roughly stated as being that which gives the smallest measure-ment obtainable from any jioint of the median line in this im-mediate neighborhood. It is on the average about s
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmidwifery, bookyear18
