Patent ID: 8579985

Claim:
A modular prosthetic hip system for hip arthroplasty, comprising: a prosthetic femoral stem implant component comprising a neck implant bore, the prosthetic femoral stem implant component configured to be inserted in a femur such that at least a portion of a proximal end of the prosthetic femoral stem implant component is positioned within a trochanteric region of the femur and a distal end of the prosthetic femoral stem implant component is positioned in an intramedullary canal of the femur; a prosthetic femoral neck implant component comprising: a bore engaging portion configured for lateral advancement through the neck implant bore and for fixed attachment to the neck implant bore of the prosthetic femoral stem implant component, the bore engaging portion comprising at least one tapered surface for fixedly attaching the prosthetic femoral neck implant to the prosthetic femoral stem implant component with at least one interference fit; and a head engaging end, wherein the bore engaging portion further comprises a thread for engagement of the neck implant bore to the prosthetic femoral neck implant, the thread configured to lock the femoral neck implant component in the femoral stem implant component with an interference fit between the thread and the at least one tapered surface; and a prosthetic femoral head implant component attachable to the head engaging end of the prosthetic femoral neck implant component, the prosthetic femoral head implant configured to fit rotatably within an acetabulum.