Modular center pegged glenoid

Abstract

A glenoid prosthetic is provided and may include a first component having an articulating surface engaged by the head of a humeral component or a natural humerus and an engagement surface formed on an opposite side of the first component than the articulating surface. A second component may be attached to the first component proximate to the engagement surface and may be attached to a resected glenoid of a scapula. The second component may be formed from a different material than the first component and may include at least one coupling stem received within an aperture formed in the resected glenoid.

What is claimed is: 
     
         1 . A glenoid prosthetic comprising:
 a first component having an articulating surface operable to be engaged by the head of a humeral component or a natural humerus and an engagement surface formed on an opposite side of said first component than said articulating surface; and   a second component attached to said first component proximate to said engagement surface and operable to be attached to a resected glenoid of a scapula, said second component being formed from a different material than said first component and including at least one coupling stem operable to be received within an aperture formed in said resected glenoid.   
     
     
         2 . The glenoid prosthetic of  claim 1 , wherein said second component is attached to said first component via a snap-fit. 
     
     
         3 . The glenoid prosthetic of  claim 1 , wherein said second component is attached to said first component at a perimeter surface of said first component, said perimeter surface being disposed substantially perpendicular to said engagement surface. 
     
     
         4 . The glenoid prosthetic of  claim 1 , wherein said first component includes a radial groove formed in a perimeter surface thereof, said perimeter surface being disposed substantially perpendicular to said engagement surface. 
     
     
         5 . The glenoid prosthetic of  claim 4 , wherein said second component includes a flange received by said radial groove to attach said second component to said first component. 
     
     
         6 . The glenoid prosthetic of  claim 5 , wherein said second component includes at least one peg extending into a bore formed in said first component at said engagement surface to attach said second component to said first component. 
     
     
         7 . The glenoid prosthetic of  claim 6 , wherein said second component is attached to said first component via a snap-fit at said radial groove. 
     
     
         8 . The glenoid prosthetic of  claim 4 , wherein said second component is attached to said first component via a snap-fit at said radial groove. 
     
     
         9 . The glenoid prosthetic of  claim 1 , wherein said second component is molded onto said first component. 
     
     
         10 . The glenoid prosthetic of  claim 1 , wherein said first component is formed from a polymer material and said second component is formed from metal. 
     
     
         11 . A glenoid prosthetic comprising:
 a first component having an articulating surface operable to be engaged by the head of a humeral component or a natural humerus and an engagement surface formed on an opposite side of said first component than said articulating surface; and   a second component attached to said first component proximate to said engagement surface and operable to be attached to a resected glenoid of a scapula, said second component being attached to said first component via a snap-fit and including at least one coupling stem operable to be received within an aperture formed in said resected glenoid.   
     
     
         12 . The glenoid prosthetic of  claim 11 , wherein said second component at least partially surrounds a perimeter surface of said first component, said perimeter surface being disposed substantially perpendicular to said engagement surface. 
     
     
         13 . The glenoid prosthetic of  claim 11 , wherein said second component is attached to said first component at a perimeter surface of said first component, said perimeter surface being disposed substantially perpendicular to said engagement surface. 
     
     
         14 . The glenoid prosthetic of  claim 11 , wherein said first component includes a radial groove formed in a perimeter surface thereof, said perimeter surface being disposed substantially perpendicular to said engagement surface. 
     
     
         15 . The glenoid prosthetic of  claim 14 , wherein said second component includes a flange received by said radial groove to attach said second component to said first component. 
     
     
         16 . The glenoid prosthetic of  claim 15 , wherein said second component includes at least one peg extending into a bore formed in said first component at said engagement surface to attach said second component to said first component. 
     
     
         17 . The glenoid prosthetic of  claim 16 , wherein said second component is attached to said first component via said snap-fit at said radial groove. 
     
     
         18 . The glenoid prosthetic of  claim 14 , wherein said second component is attached to said first component via said snap-fit at said radial groove. 
     
     
         19 . The glenoid prosthetic of  claim 11 , wherein said first component is formed from a polymer material and said second component is formed from metal.