An implant apparatus for use in uniting a pair of bone segments, the apparatus including a first stem configured to be implanted in an intramedullary cavity of a first bone segment； a second stem configured to be implanted in an intramedullary cavity of a second bone segment； and a connector for connecting the first stem to the second stem, the connector including a first connector segment and a second connector segment, wherein the first connector segment and the second connector segment are coupled together at a lap joint connection.
