An apparatus can include a humeral stem (102). A glenosphere (114) can be configured to be mountable to the humeral stem. The glenosphere can be adapted to operate with a complementary glenoid component (118). The humeral stem can include a removable taper member (210) on a side of the humeral stem facing the glenosphere. The taper member can be configured to mount the glenosphere to the humeral stem.