TY - CHAP M1 - Book, Section TI - Normal Mechanisms of Labor A1 - Dy, Jessica A2 - Posner, Glenn D. A2 - Dy, Jessica A2 - Black, Amanda A2 - Jones, Griffith D. Y1 - 2015 N1 - T2 - Oxorn-Foote Human Labor & Birth, 6e AB - LOA is a common longitudinal cephalic presentation (Fig. 10-1). Two-thirds of occiput anterior positions are in the LOA position. The attitude is flexion, the presenting part is the posterior part of the vertex and the posterior fontanelle, and the denominator is the occiput (O). SN - PB - McGraw-Hill Medical CY - New York, NY Y2 - 2024/04/20 UR - obgyn.mhmedical.com/content.aspx?aid=1106375841 ER -