This study aimed to compare the development of the uterine niche after single and double closure of cesarean incision.

One of the most performed major surgeries worldwide is a cesarean section (CS), and CS rates are rising. These long-term complications are associated with an anatomical defect of the myometrium due to impaired healing of the incision in the uterus, a so-called uterine niche or cesarean scar defect, and with this increased rate of cesarean delivary the development of uterine niche has also increased In 50-70% of patients after cesarean section.

The classification of niche was based on the measurement of the depth, base of the isthmocele and on calculation of its triangular area. This allowed to classify the uterine niches after cesarean section according to the size of its area.

Inclusion Criteria:

• Age ≥ 18 years.
• Women who undergo first elective cesarean section (CS).

Exclusion Criteria:

• Women with a previous CS
• Inadequate possibility for counselling (e.g. indication for CS without being informed about the study previously, women in severe pain without adequate therapy
• previous major uterine surgery (e.g. laparoscopic or laparotomy fibroid resection, septum resection), Women with known causes of menstrual disorders (e.g. cervical dysplasia, communicating hydro salpinx, uterine anomaly
• Placenta increta or percreta during the current pregnancy
• ≥ Three foetuses during the current pregnancy.
• Placenta previa
• Twins

Women underwent cesarean section (CS).

The data will be available upon a reasonable request from the corresponding author after the end of study for one year.

After the end of study for one year.

The data will be available upon a reasonable request from the corresponding author.