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. Author manuscript; available in PMC: 2024 Mar 11.
Published in final edited form as: Am J Obstet Gynecol. 2023 Aug 15;230(3 Suppl):S1014–S1026. doi: 10.1016/j.ajog.2022.03.016

Figure 4:

Figure 4:

This schematic of posterior Rubin’s Maneuver – the 30-degree rotation/adduction of posterior shoulder to align with the oblique diameter of the pelvic inlet demonstrates its mechanical advantage in that it reestablishes the normal physiologic position, which is optimal for unobstructed vaginal delivery.