<prompt> Recurrent breech presentation is due to:Placenta previaHydrocephalusSeptate uterusShort cord  <response>: Ref: Duttas Text Hook of Obstetrics, 7th edition.Explanation:Though all the other options can cause breech presentation. they need not recur in each pregnancy. But septate uterus does not change with each pregnancy. Thus, logically, it is the right option.Breech presentationMost common abnormal presentationMost common cause is prematuritySpontaneous conversion to vertex occurs in 75 cases by 34 weeksEngaging diameterOf buttocks - Bitrochanteric 110 emsOf shoulder- Bisacromial 12 cms Of head - Subocccipito frontal 10 cmsSacrum is the denominatorDelivery of aftercoming head in breech is by flexionElective CS in breechBig breecho 3.5 kgsHvperextension of headFootling presentationFPDMethods of delivery of after coming headBurns Marshall methodJaw Sexion and shoulder traction Mauriceau Smellie Veit techniquePipers forcepsPinards manoueuvre: Bringing down a leg in assisted breech deliveryLovsets manoueuvre: Delivery of extended arms in breech delivery. 