Abdominal wall endometriosis (AWE) is defined as the presence of endometriotic infiltration in any segment or depth of the abdominal wall. It is a rare and uncommon presentation of endometriosis. 1 This localization of the disease is poorly reported in the literature and its pathophysiology is only partially understood. [2][3][4] Spontaneous AWE occurs in a scarless abdomen and accounts for about 20% of all AWE. 5 More frequently, secondary AWE develops in a surgical scar resulting from an obstetric or gynecologic

Operative Vaginal delivery is considered an obstetrical emergency which entails the extraction of the fetus from the vagina with the use of forceps or a vacuum extractor. This instrumental emergency intervention presents a high risk of maternal and neonatal complications and carries an important risk of failure. Objectives: Our aims is to understand the forces involved in an operative vaginal delivery during the extraction of the fetal head in order to evaluate the technical features required to design an innovative medical device which could ideally lower the incidence of complications and failures of an instrumental vaginal delivery with forceps and vacuum. Study design: Trials have been carried out with devices used in operative vaginal delivery like the Omnicup vacuum produced by Kiwi and the Neagele and Simpson forceps and the "Sophie and Mum" trainer, produced by "Med model internatonal which reproduce the maternal pelvis and fetus. The compression force exerted by the blades of the forceps on the head of the fetus was calculated with the help of a dynamometer, whereas a triaxial accelerometer produced by "PCB" was used to analyse the force exerted along the Cartesian axes applied by the operator during extraction with forceps and obstetrical vacuum. Results: The compression force exerted by the two blades of the forceps on the fetal head during extraction is 28.92 N with a Neagele Forceps and 25.53 N with a Simpson forceps. The overall strength of the tri-axial acceleration along the X, Y and Z axes required for the extraction of the fetal head varies between 120-170 N for the vacuum extractor and 120-155 N for forceps. The calculated coefficient of static friction is 0.1866. Conclusions: The results obtained from the present feasibility study must be kept in mind designing this new obstetrical device. To reduce the failure rate for operative vaginal deliveries (i.e. detachment of the suction cap and/or failure to extract the head of the fetus), the device should be able to support greater forces of traction than those found in the simulations.