title: [Post-operative fractures: epidemiology, predisposing factors].
abstract: The general predisposing factors are female sex and osteoporosis. The local predisposing factor is loosening of the stem.As expected type III fractures are more frequent in case of osteoporosis (notion of elasticity gap) and fractures type II and I in case of loosening (notion of bone stock).
authors.affiliation: Service d'Orthopédie??, Pavillon T, Hôpital E Herriot, Place d'Arsonval, F-69437, Lyon Cedex 03, France.
authors.forename: V
authors.initials: V
authors.lastname: Fière
authors.forename: H
authors.initials: H
authors.lastname: Chavane
authors.forename: M H
authors.initials: MH
authors.lastname: Fessy
authors.forename: J
authors.initials: J
authors.lastname: Bejui
authors.forename: L P
authors.initials: LP
authors.lastname: Fischer