[Comparative study of 2 series of cases of uterine rupture collected at the Averroès Hospital in Casablanca from 1979 to 1981 and from 1984 to 1986].

There were 156 uterine ruptures collected out of 34,807 deliveries in the gynaecological and obstetrical department of the University Hospital of Averroes in Casablanca. This is a rate of 1 per 223 deliveries. The factors that predispose to this complication are low socio-economic status of the patients, multiparity and, above all, a scarred uterus. Surgical abnormalities of the pelvis and dystocia due to malpresentations and above all inappropriate manoeuvres which continue to be practised are all responsible for the condition. The rupture usually occurs in the lower segment. When the lesions are extensive the cervix and the bladder are most often damaged. Treatment should be as conservative as possible to maintain the woman's fertility but at the same time doing whatever is necessary for her.