Abstract: A bone cement pressuriser (50) comprising a pressuriser head. The pressuriser head has a first side (51) coupled to or configured to couple to an end of a pressuriser handle and a second side (52) configured to transfer pressure to bone cement in a bone cavity. The second side of the pressuriser head is defined by a first, convex curved surface (53) and a second surface (54) forming a ring surrounding the first surface and extending radially beyond the first surface. A method of pressurising bone cement using the bone cement pressuriser is also disclosed. The first surface is configured to pressurise bone cement within a bone cavity and the second surface is configured to both pressurise bone cement within the bone cavity and to seal about the periphery of the bone cavity.