A glenoid component is provided to reduce glenoid loosening when implanted
in orthopedic joint replacement/reconstruction, such for a shoulder. The
glenoid component can include pegs or a keel and articulating surface
geometry that uses complex, non-spherical geometry to recreate a level of
constraint that is adequate, but not excessive, to thereby mitigate
loosening of the glenoid component after implantation. In addition, some
embodiments provide that peak stresses both within cement and at an
interface of the cement and a supportive component can be reduced.
Further, geometry of the pegs can allow stresses to be evenly applied to
a cement mantle formed in the supportive component. Finally, the pegs can
be configured to desired lengths in order to avoid placement in areas of
the supportive component, for example, that have insufficient bone stock.