Before revision: APM prevents a prolonged labour by stretching the two fibrous layers within the Uro-Genital Membrane, a triangular shaped muscular shelf at the front half of the opening of the bony pelvis, through which the 2 cm diameter birth canal and urethra pass, and the fibrous coats of the pelvic floor muscles, in this way shortening the pushing stage of birth, and transforms the fat packed rigid skin at the opening to the birth canal into paper thin, stretchy elastic skin, all without using the baby's head .
After revision: , decreasing the risk of tearingAPM prevents a prolonged labour by stretching the two fibrous layers within the Uro-Genital Membrane, a triangular shaped muscular shelf at the front half of the opening of the bony pelvis, through which the 2 cm diameter birth canal and urethra pass, and the fibrous coats of the pelvic floor muscles, in this way shortening the pushing stage of birth, and transforms the fat packed rigid skin at the opening to the birth canal into paper thin, stretchy elastic skin, all without using the baby's head .