Patent ID: 8702807

Claim:
A modular orthopaedic hip system, comprising: an implantable proximal body component including a tapered bore and a bolt including a first set of male threads, a stem insertion tool including an impaction plate positioned at a proximal end and a second set of male threads formed at a distal end, and an implantable distal stem component configured to be separately secured to the implantable proximal body component and the stem insertion tool, the implantable distal stem component having (i) a tapered post formed in an outer surface thereof, the tapered post being configured to be received into the tapered bore of the implantable proximal body component, (ii) an upper set of female threads having a superior end that opens into a superior surface of the distal stem component, the upper set of female threads extending inferiorly into the distal stem component, and (iii) a lower set of female threads having an superior end that opens into an inferior end of the upper set of female threads, the lower set of female threads extending inferiorly from the upper set of female threads, wherein of the diameter of the upper set of female threads is larger than the diameter of the lower set of female threads, wherein when the implantable distal stem component is secured to the implantable proximal body component, (i) the bolt is spaced apart from the upper set of female threads and the first set of male threads is engaged with the lower set of female threads, and (ii) the tapered post of the implantable distal stem component is received in the tapered bore of the implantable proximal body component, wherein when the implantable distal stem component is secured to the stem insertion tool, the second set of male threads is engaged with the upper set of female threads and spaced apart from the lower set of female threads, and wherein (i) the distal stem component further has a blind hole having a superior end that opens into an inferior end of the lower set of female threads, (ii) the blind hole extends inferiorly from the lower set of female threads, and (iii) the blind hole has a rounded inferior end.