no participants because of the sars cov 2 pandemic there is no volonteer to be recruited for the lurning curve . all the residents are busy working in COVID UNITS

In the last decades, caesarean section (CS) rates are getting higher in all over the world.

This encourages us to improve operative techniques. In January 2018, investigators have introduced in the study unit: The French Ambulatory C section (FAUCS). This innovative approach appeares to provide a shorter recovery time, with a hospital discharge the day after surgery in 90% and then a better experience of childbirth.

The diffusion of this technique requires its integration to the curriculum of residency.

In this study, investigators will determine the mean number of procedures needed for trainees to master FAUCS.

Caesarean section (CS) is of the most commonly performed operations worldwide. This encourages a permanent search to improve the operative techniques for a better childbirth experience. The MisgavLadach (MLC), caesarean section is the gold standard for caesarean section. Thus so, it is included During the first years of obstetrics curriculum.

In January 2018, investigators have introduced The French Ambulatory C section (FAUCS) in the study unit. It is an innovative approach for CS. combining a left paramedian incision , an extra peritoneal access to the uterus and a purse-string double-layer closure of the uterus. Since that date, two doctors practice it regularly. However, the diffusion of this technique requires its integration into the curriculum of residency. Currently, there is no study on the learning procedure of FAUCS.

In our study, investigators will determine the mean number of procedures needed for trainees to master FAUCS.

Once the resident will master the procedure, investigators will study his skills evolution every 5 surgeries performed alone.

Inclusion Criteria:

• trainee in obstetrics and gynecology.
• trainee subscribed for a training programm in the suty unit during the study period

Exclusion Criteria :

• Trainee in obstetrics and gynecology subscribed in atraining program elswhere from the sutudy unit during the study period
• trainee who refused to participate in the study

all the included participants will be enrolled in three groups :

• First group : trainees in obstetrics and gynecology who have achieved less than 2 years of their hole curriculum
• Second group : trainees who have acieved at least 2 years and less than 4 years of the curriculum
• third group : trainees who have achieved at least 4 years of their curriculum