Glenoid implant

Abstract

An apparatus can include a base plate. A glenosphere can be configured to be mountable to the base plate. The glenosphere can be adapted to operate with a complementary humeral component. The base plate can include a removable taper member on a side of the base plate facing the glenosphere. The taper member can be configured to mount the glenosphere to the base plate.

The claimed invention is: 
     
         1 . An apparatus comprising:
 a base plate; and   a glenosphere configured to be mountable to the base plate, the glenosphere adapted to operate with a complementary humeral component;   wherein the base plate includes a removable taper member on a side of the base plate facing the glenosphere, the taper member configured to mount the glenosphere to the base plate.   
     
     
         2 . The apparatus of  claim 1 , wherein the base plate includes an attachment section configured to allow attachment and removal of the removable taper section. 
     
     
         3 . The apparatus of  claim 2 , wherein the attachment section includes a threaded rod configured to receive the removable taper member. 
     
     
         4 . The apparatus of  claim 3 , wherein the threaded rod includes an unthreaded lead-in section dimensioned to promote axial alignment of the taper member relative to the threaded rod. 
     
     
         5 . The apparatus of  claim 1 , wherein the base plate is configured to receive screws to attach the base plate to a body. 
     
     
         6 . The apparatus of  claim 1 , wherein the base plate includes a first side configured to be attached to a body and a second side configured to be attached to the glenosphere, wherein the base plate includes an oblong shape and includes first and second stems extending from the first side of the base plate. 
     
     
         7 . The apparatus of  claim 6 , wherein the removable taper member is mounted to the oblong shaped base plate at a non-centered location of the base plate. 
     
     
         8 . The apparatus of  claim 1 , wherein the taper member includes a 60 degree Morse taper region. 
     
     
         9 . An apparatus comprising:
 a base plate configured to be mounted to a body, the base plate including a first side having a porous metallic surface configured to be mounted to a glenoid and a second side having an attachment section, the base plate further including one or more holes to respectively receive one or more screws to attach the base plate to a body;   a taper member removably attached to the attachment section of the base plate; and   a glenosphere mounted to the taper member, the glenosphere adapted to operate with a complementary humeral component mounted to a stem.   
     
     
         10 . The apparatus of  claim 9 , wherein the attachment section includes a threaded rod and the taper member includes a mating threaded hole. 
     
     
         11 . The apparatus of  claim 10 , wherein the threaded rod includes an unthreaded lead-in section dimensioned to promote axial alignment of the taper member relative to the threaded rod. 
     
     
         12 . The apparatus of  claim 9 , wherein the base plate includes an oblong shape and includes first and second stems extending from the first side of the base plate. 
     
     
         13 . The apparatus of  claim 12 , wherein the removable taper member is mounted to the oblong shaped base plate at a non-centered location of the base plate. 
     
     
         14 . The apparatus of  claim 13 , wherein the base plate includes three holes configured to receive screws to attach the base plate to a body. 
     
     
         15 . A method comprising:
 attaching a removable taper member to a reverse shoulder system base plate; and   mounting a glenosphere to the taper member.   
     
     
         16 . The method of  claim 15 , wherein attaching includes threading the taper member to the reverse shoulder system base plate. 
     
     
         17 . The method of  claim 16 , wherein attaching includes placing the taper member over an unthreaded lead-in section of a threaded rod on the reverse shoulder base plate to axially align the taper member to the threaded rod before the threads of the threaded rod meet the threads of the taper member. 
     
     
         18 . The method of  claim 15 , further comprising removing the taper member and attaching a second, different taper member to the reverse shoulder system base plate. 
     
     
         19 . The method of  claim 15 , wherein the taper member includes a 60 degree Morse taper region. 
     
     
         20 . The method of  claim 19 , wherein the base plate includes an oblong shape.