Self-locking modular prosthesis having taper feature and associated method

A modular femoral prosthesis, comprising:

• a stem member adapted to be implanted into a medullary canal of a femur, said stem member having (i) a continuously tapered elongated bore, and (ii) a threaded aperture defined therein, wherein (i) a first end of said elongated bore defines a post-receiving opening, (ii) said post-receiving opening being defined in a proximal end surface of said stem member, and (iii) said continuously tapered elongated bore extends between said post-receiving opening and a threaded aperture;
• and
• a neck member having (i) a neck body, (ii) a head-receiving support member secured to said neck body so as to extend outwardly therefrom, and (iii) a tapered post secured to said neck body so as to extend outwardly therefrom, wherein said tapered post is adapted to be received into said continuously tapered elongated bore of said stem member.

A method of performing a joint replacement procedure by use of a modular prosthesis which includes (i) a neck member which has (a) a neck body, (b) a head-receiving support member secured to said neck body so as to extend outwardly therefrom, and (c) a tapered post secured to said neck body so as to extend outwardly therefrom, and (ii) a stem member which has an elongated bore and a threaded aperture defined therein, said method comprising the steps of:

• advancing said tapered post into a post-receiving opening defined in a proximal end surface of said stem member, wherein (i) said post-receiving opening defines a proximal end of said elongated bore, (ii) said threaded aperture defines a distal end of said elongated bore, and (iii) said elongated bore is continuously tapered from said post-receiving opening to said threaded aperture;
• and
• implanting said stem member into a bone.

A modular prosthesis, comprising:

• a neck member having an elongated bore and a threaded aperture defined therein, wherein (i) said neck member has a distal end surface which has a post-receiving opening defined therein, (ii) said elongated bore extends between said post-receiving opening and said threaded aperture, and (iii) said elongated bore is continuously tapered from said post-receiving opening to said threaded aperture;
• and
• a stem member having a tapered post which is configured to be received in said elongated bore of said stem member.

A modular prosthesis, comprising:

• a first prosthetic component having an elongated bore and a threaded aperture defined therein, wherein (i) said first prosthetic component has an end surface which has a post-receiving opening defined therein, (ii) said elongated bore extends between said post-receiving opening and said threaded aperture, and (iii) said elongated bore is continuously tapered from said post-receiving opening to said threaded aperture;
• and
• a second prosthetic component having a tapered post which is configured to be received in said elongated bore of said first prosthetic component.