Method and apparatus for hip replacement

A modular prosthetic hip system for hip arthroplasty, comprising:

• a prosthetic femoral stem comprising a neck bore, the prosthetic femoral stem configured to be inserted in a femur such that at least a portion of a proximal end of the prosthetic femoral stem is positioned within a trochanteric region of the femur and a distal end of the prosthetic femoral stem is positioned in an intramedullary canal of the femur;
• a prosthetic femoral neck comprising:
• a neck bore engaging portion configured for lateral advancement through the neck bore and for fixed attachment to the neck bore of the prosthetic femoral stem, the neck bore engaging portion comprising at least one tapered surface for fixedly attaching the prosthetic femoral neck to the prosthetic femoral stem with at least one interference fit;
• a head engaging end,
• a distal neck portion;
• and
• a proximal cap portion, the distal neck portion comprising the head engaging end, a cap bore engaging portion, and a cap securing end, the cap bore engaging portion comprising a taper and a thread, the cap securing end comprising an external cap thread, the proximal cap portion comprising an internal cap thread for adjustable engagement with the external cap thread, the cap securing end comprising an a distal neck engaging portion configured for releasable connection to a distal neck portion driving tool, and the proximal cap portion comprising a proximal cap end engagement structure configured for releasable connection to a proximal cap portion driving tool;
• a prosthetic femoral head attachable to the head engaging end of the prosthetic femoral neck, the prosthetic femoral head configured to fit rotatably within an acetabulum.

A modular prosthetic hip system for hip arthroplasty, comprising:

• a prosthetic femoral stem comprising a neck bore extending entirely through the prosthetic femoral stem from a first side of the prosthetic femoral stem to a second side of the prosthetic femoral stem;
• a prosthetic femoral neck comprising a neck bore engaging portion configured for lateral advancement through the neck bore, the neck bore engaging portion comprising at least one tapered surface for fixedly attaching the prosthetic femoral neck to the prosthetic femoral stem with at least one interference fit, wherein the neck bore engaging portion further comprises a thread for engagement of the neck bore to the prosthetic femoral neck, the thread configured to lock the femoral neck in the femoral stem with an interference fit at the at least one tapered surface;
• and
• a prosthetic femoral head disposed at a distal neck portion of the prosthetic femoral neck, the prosthetic femoral head configured to fit rotatably within an acetabulum.