In the systems approach, certain patterns of family interaction are linked with physical abuse of children in the family. If these interactions are blocked or changed using specific family therapy interventions, the risk of further abuse will be significantly reduced. Identifying typical interaction patterns associated with abuse is a useful first step in planning the management of physically-abusing families. A full systemic formulation of the presenting problem will address numerous systems and subsystems simultaneously, notably the family-professional system, the family within the extended family or friendship system, and nuclear family. Interventions may have to be directed on a variety of these levels. London's Marlborough Family Service has assessed and treated over 100 child-abusing families. A family day unit is the setting, and a multifamily group is the principal treatment approach. Within the day unit, real life stress situations are recreated around everyday issues, enabling families to find new and nonviolent solutions to the problems of daily life. In the cases seen, about 33 percent have resulted in a recommendation of permanent alternative family care for children. In reunited families, the re-injury rate has been extremely low. It is concluded that a child abuse treatment setting that is neutral in terms of outcome can maximize the possibility of change and minimize repetitive conflicts between families and statutory authorities by providing a context removed from life's daily struggles. 45 references. (Author abstract modified)