Methods of forming implants using heat bonding

A method of forming an orthopaedic implant, comprising:

• placing a bonding portion of a mating part in an opening formed in an implant body, the opening defining a variable opening width, the implant body including a first wall that forms a bottom surface of the opening, the bottom surface of the opening of the implant body being positioned directly below a bottom surface of the bonding portion, the mating part including a post extending perpendicularly from the bonding portion, the implant body including a plurality of second walls defining the opening width and extending from the bottom surface of the opening of the implant body to a top surface of the implant body, the top surface of the implant body being perpendicular relative to a longitudinal axis of the post, a top surface of the bonding portion of the mating part being perpendicular relative to the longitudinal axis of the post;
• and
• heat bonding the bonding portion to a material to bond the mating part to the implant body.