A textbook of obstetrics . Fig- 275-—Effect of the lessened slant outward of the symphysis in a rachiticpelvis upon the relationship between the true and the conjugate diameter Ribemont-Dessaignes . 27 4i8 THE PATHOLOGY OF LABOR. estimation of the true conjugate, having demonstrated its supe-rior accuracy in practice. For taking this measurement thepatient is put in the dorsal posture, with the buttocks projectingbeyond the vl\^c of the table or bed on which she lies. A markwith the point o\ a lead-pencil is made on the skin over thesymphysis pubis, about % of an inch below the upper
A textbook of obstetrics . Fig- 275-—Effect of the lessened slant outward of the symphysis in a rachiticpelvis upon the relationship between the true and the conjugate diameter Ribemont-Dessaignes . 27 4i8 THE PATHOLOGY OF LABOR. estimation of the true conjugate, having demonstrated its supe-rior accuracy in practice. For taking this measurement thepatient is put in the dorsal posture, with the buttocks projectingbeyond the vl\^c of the table or bed on which she lies. A markwith the point o\ a lead-pencil is made on the skin over thesymphysis pubis, about % of an inch below the upper two fingers of the left hand are inserted in the vagina, asin measuring the diagonal conjugate. The tip of the middlefinger, having found the middle line of the promontory, ismoved a little to the patients right, and tip I) of the pelvimeter,shown in figure 278, is made to take its place. While theexamining physician holds the shaft of the pelvimeter firmly in. Fig. 276.—Authors pelvimeter: a, For measuring the true conjugate plus thethickness of the symphysis; />, with extra tip added for measuring the thickness ofthe symphysis. place, an assistant adjusts tip a of the movable bar over themark made on the symphysis. This bar is then screwed tight,the whole pelvimeter is removed, and the distance between thetips is found by a tape-measure. This distance is the con-jugate plus the thickness of the symphysis ( Fig. 279). Thelatter I have found to be 1 centimeter in twenty-six dried pelves,\YA centimeters in nine, I j centimeters in thirteen, l ;4 centi-meters in four, and 2 centimeters in three specimens—one ahigh-grade rachitic pelvis, another of the masculine type, andthe third a justomajor pelvis. The thickness of the symphysisis measured as shown in figure 27S. In living subjects the index-finger of the left hand must find the- inner surface of the symphy-sis pubis, and must follow it up to within about \s of an inch ANOMALIES IX TH
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
