<prompt> Causes of breech presentation are :HydrocephalusPlacenta praePelvic contractureAll of the above  <response>: Ans. is a, c and d i.e. Hydrocephalus; Pelvic contracture; and Placenta prae At 28 weeks of pregnancy, approximately 20 of women have breech presentation. The fetus undergoes spontaneous version usually between 30th and 34th week. This corrects the breech position such that, at term only 3 of pregnant women have breech presentation. Any maternal or fetal condition, which prevents this spontaneous version will result in a persistent breech presentation. Causes of Breech presentation Most common cause-prematurity. Utner Causes . Factors preventing spontaneous version - hininonic ASD BEtween Oesophagus and Trachea Atrial Anomalies of uterus septate bicornuate Anomalies of fetus trisomy 13, 18, 21 Septa! Sho cord Defect - lntra Uterine Death BEtween Breech with Extended Legs Oesophagus- Oligohydraminos Trachea - Twins Favourable adaptation : Hydrocephalus Placenta prae Cornufundal attachment of the placentadeg Contracted pelvis Undue mobility of the fetus : Hydramniosdeg Multiparaedeg with lax abdominal wall Also Know Recurrent breech : When breech recurs in 3 or more consecutive pregnancies, it is called habitual or recurrent breech. Causes: Congenital malformation of uterus septate or bicornuate. Repeated cornufundal attachment of the placenta. 