Impact of subtrochanteric fractures in the geriatric population: better pre-fracture condition but poorer outcome than pertrochanteric fractures: evidence from the Spanish Hip Fracture Registry.

"Declarations Ethics approval and consent to participateAll participating centres in the Spanish hip fracture registry Registro Nacional de Fracturas de Cadera (RNFC) received approval from their local ethics committees or local institutional review boards. This study has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. All patients included in the registry (RNFC) gave their prior informed consent. Consent for publicationNot applicable. Competing interestsHéctor J. Aguado, Pablo Castillón-Bernal, Paula S. Ventura-Wichner, Carmen Cervera-Díaz, Javier Abarca-Vegas, Luis García Flórez, Jordi Salvador-Carreño, Virginia García-Virto, Clarisa Simón-Pérez, Cristina Ojeda-Thies, Pilar Sáez-López and Juan I. González-Montalvo have no personal or commercial association (e.g. consultancies, stock ownership, equity interest, patent, licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article. The authors declare that they have no competing interests. Competing interests Héctor J. Aguado, Pablo Castillón-Bernal, Paula S. Ventura-Wichner, Carmen Cervera-Díaz, Javier Abarca-Vegas, Luis García Flórez, Jordi Salvador-Carreño, Virginia García-Virto, Clarisa Simón-Pérez, Cristina Ojeda-Thies, Pilar Sáez-López and Juan I. González-Montalvo have no personal or commercial association (e.g. consultancies, stock ownership, equity interest, patent, licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article. The authors declare that they have no competing interests."

"Funding This study was funded by AMGEN SA, UCB Pharma, Abbott Laboratories and FAES Farma; and two research grants awarded by Fundación Mutua Madrileña (grant number AP169672018) and Fundación Mapfre. The sponsors were not involved in any aspect of the project or in preparation of the manuscript."