It has been well known that the breech presentation is the mcst frequent abnormal presentation and has inherent obstetric problems especially on the fetal and maternal morbidity and complications in primigravida.
From January, 1950 to December, 1968, there were 377 cases of breech delivery in the Dept. of Obstetrics and Gynecology, National Medical Center. The authors attempted ten years clinical survey on the above materials consisted of breech delivery of singletons of n illipara and multipara, and twins.
The results obtained were as follows;
1) The incidence of breech delivery was 2.9% in singletons and 3.8% in all deliveries of singletons and twins.
2) The incidence based on the parity was 3.1% or over in nullipara and 2.1% or over in multipara. Age distribution was concentrated on the ages between 26-30. The youngest was 20 and the oldest was 53.
3) As to the gestational weeks and baby weight, 71.9% was 38 weeks or over and´ 72.6% was 2,500 gm or over, respectively.
4) Regarding thetype of breech presentation the most common was frank, breech(76 cases) and the others were in incomplete (66 cases) and complete breech (20 cases).
5) The mode of delivery in orders were partial extraction (65.7%), cesarean section(13. 6%), spontaneous delivery (11.2%), total extraction (6. 2%) and the other
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