Every year, about 40 000 infants are prematurely born in France, amongst wh
om 10 000 are very premature with a gestational age below 33 weeks. Despite
thematic improvement in the prevention and the treatment of respiratory di
stress syndrome, the leading cause of perinatal mortality among premature i
nfants, severe prematurity remains an important issue in public health poli
cies of developed countries. Indeed, severe prematurity is associated with
a high risk of subsequent neuromotor impairement. Although the number of in
fants who survive severe prematurity without handicap is increasing, the pr
evalence of cerebral palsy in this population remains high. Recently, new p
athophysiological concepts have emerged and substantial progress has been m
ade in the prevention and the diagnosis of white matter damage. For infants
with severe brain injury, their future qual life is an essential criterion
reaching decisions regarding the continuation or dis-continuation of life
prolonging treatments.