Patent ID: 6916342

Claim:
A constrained liner assembly for use with an orthopedic prosthetic device, comprising: (a) a prosthetic cup, comprising a cavity adapted to receive a liner; (b) a liner comprising a cavity adapted to receive an implant stem head; (c) a member connected to the liner, which member is adapted to impede the head from escaping the cavity; and (d) an adapter component comprising: a first adapter element having a first surface adapted to mate with a prosthetic cup, and a second surface adapted to mate with a second adapter element; and a second adapter element having a fisrt surface adapted to mate with the second surface of the first adapter element; wherein the second surface of the first adapter element is tapered and the first surface of the second adapter element is tapered, forming a taper locking interface between the first and second adapter elements when the elements are coupled; wherein the constrained liner assembly provides resistance to disassembly.