One of the main theses of Marxist geography is that social inequalities have been exacerbated in capitalist societies, inequalities that are also expressed in space on multiple scales and dimensions, which notoriously affect the welfare of individuals and societies. For decades, these socio-spatial inequalities have been studied through various concepts, among which the notion of polarisation stands out, together with various sub-concepts (social, political, economic, affective polarisation, etc.) to refer to different social and territorial phenomena, such as labour transformations, segregation or political conflicts, on the basis of which it has been argued that the concept is diffuse and ambiguous. Based on the above, an analysis of how the concept of polarisation has been approached, especially in geography and other related disciplines, was generated through a literature review in order to generate a space for reflection on how this concept has been constructed, approached from the origins of the concept in Marxism, Sassen's theoretical approach, technical approaches from geography and the different sub-concepts of polarisation that are recognised in the literature. From the previous process, we seek to ela-borate a new proposal of theoretical approach through the socio-spatial dialectic, recog-nising the importance of the territorial component, as social and capital, to take up this concept as an interesting approach for studies on socio-spatial inequality in geography.