An implant comprising a web structure, wherein the web structure comprises: a plurality of planar truss units coupled to each other, the planar truss units comprising a plurality of struts coupled to a plurality of nodes; characterised in that web structure further comprises: a plurality of internal polar struts extending from one contact surface of the implant to an opposing contact surface of the implant; and wherein exterior connecting struts couple the ends of the internal polar struts, and wherein at least two of the internal polar struts have different lengths such that the web structure has at least one non-planar surface defined by the ends of the internal polar struts and the exterior connecting struts; wherein a plurality of planar truss units define an exterior surface of the web structure, and wherein the exterior surface of the web structure defined by the plurality of planar truss units is substantially parallel to the longitudinal axis of the internal polar struts; and wherein one or more angles defined by two struts and a node of one or more planar truss units are different than one or more corresponding angles defined by two struts and a node of one or more other planar truss units, wherein the exterior connecting struts couple the nodes of the non-equivalent angle planar truss units to each other, defining said non-planar contact surface. a plurality of planar truss units coupled to each other, the planar truss units comprising a plurality of struts coupled to a plurality of nodes; characterised in that web structure further comprises: a plurality of internal polar struts extending from one contact surface of the implant to an opposing contact surface of the implant; and wherein exterior connecting struts couple the ends of the internal polar struts, and wherein at least two of the internal polar struts have different lengths such that the web structure has at least one non-planar surface defined by the ends of the internal polar struts and the exterior connecting struts; wherein a plurality of planar truss units define an exterior surface of the web structure, and wherein the exterior surface of the web structure defined by the plurality of planar truss units is substantially parallel to the longitudinal axis of the internal polar struts; and wherein one or more angles defined by two struts and a node of one or more planar truss units are different than one or more corresponding angles defined by two struts and a node of one or more other planar truss units, wherein the exterior connecting struts couple the nodes of the non-equivalent angle planar truss units to each other, defining said non-planar contact surface. a plurality of internal polar struts extending from one contact surface of the implant to an opposing contact surface of the implant; and wherein exterior connecting struts couple the ends of the internal polar struts, and wherein at least two of the internal polar struts have different lengths such that the web structure has at least one non-planar surface defined by the ends of the internal polar struts and the exterior connecting struts; wherein a plurality of planar truss units define an exterior surface of the web structure, and wherein the exterior surface of the web structure defined by the plurality of planar truss units is substantially parallel to the longitudinal axis of the internal polar struts; and wherein one or more angles defined by two struts and a node of one or more planar truss units are different than one or more corresponding angles defined by two struts and a node of one or more other planar truss units, wherein the exterior connecting struts couple the nodes of the non-equivalent angle planar truss units to each other, defining said non-planar contact surface.