Shoulder prosthesis

Abstract

A prosthesis is provided and may include a central body having a longitudinal axis and an opening that receives an installation tool. The prosthesis may further include a plurality of arms each having a first end proximate to the central body and a second end extending from the central body in a first direction substantially perpendicular to the longitudinal axis. The second end may include a greater width than the first end measured in a second direction substantially perpendicular to the first direction.

1 . A prosthesis comprising:
 a central body having a longitudinal axis and an opening operable to receive an installation tool; and   a plurality of arms each including a first end proximate to said central body and a second end extending from said central body in a first direction substantially perpendicular to said longitudinal axis, said second end including a greater width than said first end measured in a second direction substantially perpendicular to said first direction.   
     
     
         2 . The prosthesis of  claim 1 , further comprising at least one tapered surface extending between said first end and said second end. 
     
     
         3 . The prosthesis of  claim 2 , wherein said at least one tapered surface is substantially planar. 
     
     
         4 . The prosthesis of  claim 2 , wherein said at least one tapered surface includes a series of stepped portions. 
     
     
         5 . The prosthesis of  claim 1 , wherein said first end is spaced apart and separated from said central body. 
     
     
         6 . The prosthesis of  claim 1 , wherein said central body includes a bore in communication with said opening. 
     
     
         7 . The prosthesis of  claim 6 , wherein said bore is one of a blind bore or a through bore. 
     
     
         8 . The prosthesis of  claim 6 , wherein said bore includes a series of stepped portions. 
     
     
         9 . The prosthesis of  claim 6 , wherein said bore has at least one of a threaded portion and a Morse taper. 
     
     
         10 . The prosthesis of  claim 1 , wherein said plurality of arms each include a series of stepped portions that extend between said first end and said second end. 
     
     
         11 . The prosthesis of  claim 1 , wherein said plurality of arms are formed from a porous material. 
     
     
         12 . A prosthesis comprising:
 a central body having a longitudinal axis; and   a plurality of arms each including a first end proximate to said central body and a second end extending from said central body in a first direction substantially perpendicular to said longitudinal axis, said plurality of arms each including at least one tapered surface that provides said plurality of arms with an increasing thickness extending in a direction from said first end to said second end.   
     
     
         13 . The prosthesis of  claim 12 , wherein said at least one tapered surface includes two tapered surfaces that cooperate to provide said arms with said increasing thickness. 
     
     
         14 . The prosthesis of  claim 13 , wherein said at least one tapered surface is substantially planar. 
     
     
         15 . The prosthesis of  claim 13 , wherein said at least one tapered surface includes a series of stepped portions. 
     
     
         16 . The prosthesis of  claim 12 , wherein said second end includes a greater width than said first end measured in a second direction substantially perpendicular to said first direction. 
     
     
         17 . The prosthesis of  claim 12 , wherein said central body includes a bore in communication with said opening. 
     
     
         18 . The prosthesis of  claim 17 , wherein said bore is one of a blind bore or a through bore. 
     
     
         19 . The prosthesis of  claim 17 , wherein said bore includes a series of stepped portions. 
     
     
         20 . The prosthesis of  claim 17 , wherein said bore has at least one of a threaded portion and a Morse taper. 
     
     
         21 . The prosthesis of  claim 12 , wherein said plurality of arms each include a series of stepped portions that extend between said first end and said second end. 
     
     
         22 . The prosthesis of  claim 12 , wherein said plurality of arms are formed from a porous material.