Patent ID: 7597715
Filing Date: 2009-10-06
Classification: A61F

Abstract:
1. An orthopedic prosthesis comprising a hemispherical body that includes an open end defining a perimeter, said orthopedic prosthesis being formed of a porous metal shell, a non-porous rim defined at a radial edge of said porous metal shell and being metallurgically bonded to said porous metal shell such that said non-porous rim is non-removable from said porous metal shell, and a bearing liner separately formed from and insertable through said non-porous rim to a position against an inner bearing engaging surface of said porous metal shell, said porous metal shell defining continuous porous metal from said inner bearing engaging surface to an outer bone engaging surface, and defining a first annular pocket around said perimeter of said hemispherical body, said non-porous rim including a first annular collar formed around said perimeter that is received by said first annular pocket creating an overhanging interlock between said porous metal shell and said non-porous rim entirely around said perimeter, wherein said non-porous rim defines a second annular pocket around said perimeter that receives a second annular collar formed around said porous metal shell, wherein said non-porous rim includes at least one raised wall and an outer face that includes a planar surface, said at least one raised wall integrally formed with said non-porous rim and extending upright to a position laterally offset from said planar surface, said at least one raised wall adapted to mate with an attachment tool.