Porous structures produced by additive layer manufacturing

A porous tissue ingrowth implant comprising:

• a first mesh section;
• a first plurality of metallic links;
• a second mesh section attached to the first mesh section via the first plurality of metallic links;
• a second plurality of metallic links;
• and
• a third mesh section attached to the second mesh section via the second plurality of metallic links,
• wherein each of the first, the second, and the third mesh sections have a different porosity than porosities defined by each of the first and the second plurality of metallic links,
• wherein the second mesh section is movable relative to the first mesh section about the first plurality of metallic links and the second mesh section is movable relative to the third mesh section about the second plurality of metallic links, and
• wherein the first, the second and the third mesh sections are spaced apart, and
• wherein the first mesh section includes pores configured to prevent seepage of a bone adhesive therethrough.

A porous tissue ingrowth implant comprising:

• a first mesh sheet having a first plurality of metallic links;
• a second mesh sheet having a second plurality of metallic links;
• and
• a third plurality of metallic links, each of the links of the third plurality of metallic links being attached to the first mesh sheet and to the second mesh sheet and having either one or both of a different shape and a different size than the first and the second pluralities of metallic links, wherein the first and the second mesh sheets are spaced apart.