A prosthesis system includes at least one stem including a cavity, a plurality of heads having a head coupling portion, at least one first coupler including a first upper coupling portion and a first lower coupling portion, the first upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the first lower coupling portion configured to couple with the stem with a predetermined version angle and a predetermined inclination angle, and at least one second coupler including a second upper coupling portion and a second lower coupling portion, the second upper coupling portion configured to couple with the head coupling portion of each of the plurality of heads and the second lower coupling portion configured to couple with the stem with any of a plurality of version angles and any of a plurality of inclination angles.
