The following statements are related to occipitopos- terior except:
All the options given in the question are correct except – option b
“In more than 50%, the occipitoposterior position is associated with either on anthropoid or android pelvis”
Dutta Obs 7/e, p 365
Malrotation of occiput may cause occipitosacral arrest
10% cases are associated with anthropoid or android pelvis
Incomplete forward rotation of occiput may cause deep transverse arrest
Nonrotation of occiput may cause are associated