En los documentos de UNICEF en inglés que he encontrado, el término se deja en español y añaden una corta explicación. La explicación que yo he dado en mi respuesta más arriba es un compuesto de las explicaciones que he encontrado en las tres referencias más abajo. El concepto no es igual al de "foster home" porque el menor convive con sus propios familiares.

Prevention of child recruitment and protection of children demobilized from illegal armed groups

UNICEF supports and promotes actions aimed at preventing the recruitment of children and adolescents into armed groups and supporting strategies for their demobilization, protection and social integration. UNICEF has undertaken a research with the Office of the Ombudsperson14 that analyzes factors contributing to children joining illegal armed groups, as well as violations of human rights that occur while they are part of these groups.
Although the majority of children and adolescents demobilized stay in institutions15, a study carried out with the Ombudsman’s Office has shown greater results if children face the reintegration process while being with their relatives. For this reason, UNICEF has decided to support socio-family alternatives for reintegration with the formulation of a new system of assistance: “Hogar Gestor”. A pilot testing was initiated in 5 departments selected. Teams made up of two professionals have been selected, and regularly visit and provide psychosocial support to children and adolescents demobilized and to their families. The modality is under the process of being adapted with a view to also assisting indigenous children from the Cauca Department. UNICEF is also participating in the discussions on how to link the public policy for the attention of adults (responsibility of the Alta Consejería) with the public policy for adolescents demobilized from illegal armed groups.
http://www.unicef.org/infobycountry/files/Colombia_HAU_Sep_2...

The “Hogar Gestor” (Children with living relatives) pilot
initiative provided protection to beneficiaries in the following Departments: Cundinamarca,
Tolima, Boyacá, Cesar, Guajira, Atlántico and Magdalena. The initiative provides coverage in
facilitating and referring youths to a social services network.
http://www.iom.int/jahia/webdav/shared/shared/mainsite/activ...

Sixty per cent of children and adolescents demobilized during 2007 have been attended in family and substitute settings: 164 in the Colombian Institute for Family Welfare (ICBF) foster home programme (Hogar Tutor) and 97 in family settings (Hogar Gestor), while receiving additional external support.
http://www.unicef.org/har08/files/har08_Colombia_countrychap...

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Note added at 40 mins (2008-04-28 18:40:32 GMT)
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hay un programa análogo "Hogar Tutor" cuyo nombre también se deja en español según la última referencia.