The following statements are related to occipitoposterior except :
Occipitoposterior position : In more than 50% of occipitoposterior position is associated with anthropoid or android pelvis Ref: Datta Obs 9e pg 343.
Malrotation of occiput may cause occipitoacral arrest
10% cases are associated with anthropoid or android pelvis
Incomplete forward rotation of occiput may cause deep transverse arrest
Non rotation of occiput may cause
Abnormal labor