Patent ID: 8790412

Claim:
A containment system for a femoral implant, comprising: a liner having an opening, a lip extending around the perimeter of the opening, and a web on a portion of the lip; a femoral implant head having a first surface shaped to correspond to the web, a second surface shaped to correspond to an interior surface of the liner, and a cavity, the femoral implant head being configured to rotate within the liner between a first orientation and a second orientation; and a femoral stem component that couples with the cavity and rotates the femoral implant head within the liner; wherein: in the first orientation, the first surface is aligned with the web, the femoral implant head is insertable through the opening, and the femoral stem component is at least partially obstructed from the cavity; and in the second orientation, the first surface is offset with respect to the web to expose the cavity to the femoral stem component.