Patent ID: 8608806

Claim:
A cut away monopolar acetabular liner for enclosing a femoral head to form a hip replacement prostheses, wherein the hip replacement prostheses comprises a constraining ring having at least two positioned recesses, wherein the cut away monopolar acetabular liner has a rim that creates an orifice, and wherein the orifice has a diameter that is smaller than the diameter of the femoral head, wherein the cut away monopolar acetabular liner accommodates the constraining ring, wherein the cut away monopolar acetabular liner contains at least two positioned recesses that are compatible with the recesses on the constraining ring, wherein the recesses facilitate increased range of motion in a desired direction, wherein the cut away monopolar acetabular liner is used with the constraining ring and accommodates the femoral head and prevents dislocation, wherein the constraining ring fits around the perimeter of the cut away monopolar acetabular liner to serve as a structural support of the liner and to ensure that the femoral head stays within the acetabular liner, and wherein the cut away of the liner permits a greater range of motion.