Practical midwifery; handbook of treatment . Fir. 89.—Diagrammatic Antero-Posterior Median Section Through a Lacera-tion OP THE Second Degree. should be lightly dried with a pledget of cotton, when if a tearbe present it will be recognized by its rough, irregular surface. Lacerations of the first degree usually take the form of longi-tudinal divisions of the fourchette in the antero-posterior medianplane of the body (Fig. 88). The more usual forms of laceration of the second degree are: atranverse tear immediately within the orifice of the vagina proper;. Fig. 90.—Diagrammatic Section Showing


Practical midwifery; handbook of treatment . Fir. 89.—Diagrammatic Antero-Posterior Median Section Through a Lacera-tion OP THE Second Degree. should be lightly dried with a pledget of cotton, when if a tearbe present it will be recognized by its rough, irregular surface. Lacerations of the first degree usually take the form of longi-tudinal divisions of the fourchette in the antero-posterior medianplane of the body (Fig. 88). The more usual forms of laceration of the second degree are: atranverse tear immediately within the orifice of the vagina proper;. Fig. 90.—Diagrammatic Section Showing the Retraction of a Laceration ofTHE Second Degree. and a combination of such a tear with longitudinal, lateral lacer-ations of the lateral walls, extending upward on one or both sidesof thevagina. The transverse lacerations probably occur duringthe outward and forward extension of the perinjeum as it stretchesover the advancing head, and are, in effect, a rupture of thefibrous attachments between the superficial structures and thelevator ani. Tlie lower shelf (Fig. 89) contains the superficialfascia and the-Intrinsic muscles of the perinseum; while the upperand remaining portion of The lacerated body is made up of themedian attachments of the levator ani and other muscles, which See The Relations between the Anatomy of the Lacerated Perinsexim andthe Mechanics of its Causation. Trans. Amer. Gynecol. Soc., vol. 26. 1891. PATHOLOGY OF LABOR. 301 form the pelvic diaphragm. After one of these lacerations hasoccurred, the habitual contraction of tli


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmidwifery, bookyear18