This paper analyzes the interactions between courts, experts and interest groups present in the sentence C 355/2006, through which abortion is partially decriminalized in Colombia. A detailed review of this paper allows tracing the role that interest groups and social movements have in the mobilization of expert discourses in the high courts as a strategy to influence their decisions. The use of disciplines and fields of knowledge is articulated to the general structure of the sentence as literary technology that makes visible the role of the court as administrator of justice.