Patent ID: 9060865
Filing Date: 2015-06-23
Classification: A61F,A61L

Abstract:
1. A metallic constraining ring that fastens directly to a cut-away monopolar constrained acetabular liner, wherein the constraining ring has at least one positioned recess that is compatible with at least one recess on the cut-away monopolar constrained acetabular liner that comprises cross-linked ultrahigh molecular weight polyethylene, wherein the metallic constraining ring fits around the perimeter of the cut-away monopolar constrained acetabular liner, and wherein the metallic constraining ring is set onto the cut-away monopolar constrained acetabular liner during the operative procedure after the femoral head is reduced into the cut-away monopolar constrained acetabular liner, wherein following the operative procedure the metallic constraining ring is not impinged by a femoral neck, wherein at least one recess can be positioned to increase range of motion.