asynclitism

noun

asyn·​clit·​ism (ˈ)ā-ˈsin-klə-ˌtiz-əm, -ˈsiŋ- 

: presentation of the fetal head during childbirth with the axis oriented obliquely to the axial planes of the pelvis

Back pain or prolonged active labor is sometimes caused by a subtle malposition called asynclitism, in which the baby's head is tilted and the top of it isn't centered on the cervix.

—Penny Simkin et al., Pregnancy, Childbirth, and the Newborn: The Complete Guide, 4th edition

asynclitic

(ˈ)ā-(ˈ)sin-ˈkli-tik, -sən-, -(ˈ)siŋ-, -səŋ- 

adjective

asynclitic babies

an asynclitic position