The present invention relates to a paste, a kit, and the use of the paste for mechanical fixation of articular endoprostheses. The paste contains at least one polymer for radical polymerisation, at least one polymer that is soluble in at least one monomer for radical polymerisation, and at least one filling agent that is poorly soluble or insoluble in at least one monomer for radical polymerisation, whereby the filling agent is a particulate cross-linked polymethacrylate produceable through polymerisation of methacrylic acid esters, wherebyi) at least 15% by weight of the methacrylic acid esters used for polymerisation are multi-functional methacrylic acid esters, relative to the total weight of the methacrylic acid esters used in the polymerisation, andii) at least 90% by weight of the particles of the filling agent, relative to the total weight of the filling agent, have a particle size of no more than 74 μm.
