ABSTRACT
Premature labour is a frequent situation it complicates about 6% of births, with increasing perinatal morbidity and mortality. The purpose of this study is to analyze the place of the ultrasound of the cervix in the coverage of a premature labour and the evaluation of the severity of the premature labour, being able to have therapeutic implications. It is about a prospective study on 48 patients presenting a premature labour between 28 and 35 weeks realized in the service of maternity in Hddi Chaker hospital of Sfax for a period of 7 months going from January till July, 2005. In our study 23 patients presented an ultrasonographic cervical length