Vaginal delivery is contraindicted in :-
Cesarean delivery is performed at 32 to 34 weeks as chances of cord entanglement are high in MCMA twins. Extended breech, first twin veex and second breech can be delivered vaginally Mentoanterior position (face presentation ) can be delivered vaginally by flexion (instead of extension)
Monochorionic monoamniotic twins
First twin veex 2nd breech
Extended breech
Mentoanterior position of head
Labour - II