Modular humeral head resurfacing system

• US 20050107882A1
• Filed: 08/30/2004
• Published: 05/19/2005
• Est. Priority Date: 07/27/2001
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Cordaro, Nicholas M., Stone, Kevin T.
• Granted Patent: US 8,317,871 B2
• Time in Patent Office: Days
• US Class Current: 623/19.140
• CPC Class Codes: A61B 17/1684 for the shoulder
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/40 for shoulders
• CPC Class Codes: A61F 2/4003 Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft replacing only the epiphyseal or metaphyseal parts of the femur A61F2/3601
• CPC Class Codes: A61F 2/4081 Glenoid components, e.g. cups
• CPC Class Codes: A61F 2/4684 Trial or dummy prostheses
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30113 circular
• CPC Class Codes: A61F 2002/30154 square
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30181 Y-shaped
• CPC Class Codes: A61F 2002/30207 Double convex cones, i.e. element having two convex cones, one at each of its opposite ends
• CPC Class Codes: A61F 2002/3021 frustoconical
• CPC Class Codes: A61F 2002/30217 hollow cones, e.g. tubular-like cones
• CPC Class Codes: A61F 2002/30224 cylindrical
• CPC Class Codes: A61F 2002/30225 Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30227 arched, domed or vaulted
• CPC Class Codes: A61F 2002/30276 frustopyramidal
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30339 : Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
• CPC Class Codes: A61F 2002/30474 : using an intermediate sleeve interposed between both prosthetic parts to be coupled
• CPC Class Codes: A61F 2002/30538 : for adjusting angular orientation
• CPC Class Codes: A61F 2002/30553 : for adjusting a position by translation along an axis
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30616 : Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30774 : internally-threaded
• CPC Class Codes: A61F 2002/30785 : parallel
• CPC Class Codes: A61F 2002/30787 : inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30827 : Plurality of grooves
• CPC Class Codes: A61F 2002/30836 : knurled
• CPC Class Codes: A61F 2002/30843 : Pyramidally-shaped
• CPC Class Codes: A61F 2002/30878 : with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30884 : Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30906 : shot- sand- or grit-blasted
• CPC Class Codes: A61F 2002/4007 : implanted without ablation of the whole natural humeral head
• CPC Class Codes: A61F 2002/4631 : the prosthesis being specially adapted for being cemented
• CPC Class Codes: A61F 2210/0004 : bioabsorbable
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 : made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0021 : square
• CPC Class Codes: A61F 2230/0023 : triangular
• CPC Class Codes: A61F 2230/006 : Y-shaped
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0086 : Pyramidal, tetrahedral, or wedge-shaped
• CPC Class Codes: A61F 2250/0006 : for adjusting angular orientation
• CPC Class Codes: A61F 2250/0008 : for adjusting a position by translation along an axis or two perpendicular axes
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00179 : Ceramics or ceramic-like structures

Abstract

A two piece humeral component for use in joint arthroplasty which is adapted to be implanted into a joint and engaged by a socket component of the joint. The joint component includes a body having a first articulating surface and a second medial surface opposite the first articulating surface. The first articulating surface is adapted to be engaged by the socket and the second medial surface is adapted to be secured to mounting portion. The mounting portion has a first surface and a second medial surface. The first surface is adapted to be fixably engaged to the second mounting portion of the humeral component. The second medial surface is adapted to be secured to the humerus. A peg which has a first end adapted to engage a cavity found in the humerus is disposed on the mounting portion'"'"'s second medial surface.

Claims

1. A set of surgical components for use in a joint arthroplasty to reconstruct a head of a joint, said set of surgical components comprising:

a modular joint component adapted to be implanted into the joint having a head and neck to engage an articulating surface, the joint component including a head member having a first articulating surface and a second fixation surface, said first articulating surface adapted to permit rotational and transitional movement of said modular joint component and said second fixation surface adapted to be secured to a fixation component, said fixation component having a first surface adapted to be secured to said second fixation surface of said head member and a second generally spherical surface having a depending fixation peg adapted to be secured only with at least one of the head and neck and the head; and

a spherical reamer operable to prepare a surface of the joint.

2. The set of surgical components as defined in claim 1 wherein said spherical reamer is a convex spherical reamer.

3. The set of surgical components as defined in claim 1 wherein said spherical reamer is a concave spherical reamer.

4. The set of surgical components as defined in claim 2 wherein said second surface of said fixation component has a spherical convex shape.

5. The set of surgical components as defined in claim 3 wherein said second surface of said fixation component has a spherical concave shape.

6. The set of surgical components as defined in claim 1 further comprising a coupling member operable to be removably secured between said head member and said fixation component.

7. The set of surgical components as defined in claim 1 wherein said fixation component defines a plurality of holes passing through said first and second surfaces that are operable to receive bone screws.

8. A method for implanting a humeral component during shoulder arthroplasty, said method comprising:

resecting a portion of the head of a humerus;

preparing a hole in only the head and neck of the humerus;

providing a fixation component having a shelf that defines a plurality of bone screw holes and a fixation member extending from the shelf;

implanting the fixation component onto the humerus by inserting the fixation member into the hole prepared in the humerus;

inserting at least one bone screw in at least one hole defined by the shelf;

providing a head member having a first articulating surface and a second fixation surface opposite the first articulating surface; and

securing the head member to the fixation component.

9. The method as defined in claim 8 further comprising reaming a spherical concave surface into the humerus.

10. The method as defined in claim 8 further comprising reaming a spherical convex surface into the humerus.

11. The method as defined in claim 8 wherein securing the head member to the fixation component includes attaching the head member to the fixation component by way of a Morse taper.

12. The method as defined in claim 8 further comprising inserting a coupling member between the head member and the fixation component.

13. The method as defined in claim 12 further comprising rotably adjusting the head member relative to the fixation component by way of the coupling member.

14. The method as defined in claim 12 further comprising adjusting an angle of the head member relative to the fixation component by way of the coupling member.

15. A set of surgical components for use in a joint arthroplasty to reconstruct a head of a joint, said set of surgical components comprising:

a modular prosthetic adapted to be implanted into a joint having a head and neck to engage an articulating surface, the prosthetic including a head member having a first articulating surface and a second fixation surface, said first articulating surface adapted to permit rotational and transitional movement of said modular prosthetic and said second fixation surface adapted to be secured to a fixation component, said fixation component having a first surface adapted to be secured to said second fixation surface of said head member and a second surface having a depending fixation peg adapted to be secured only with at least one of the head and neck or the head of the joint, said fixation component defines a hole configured to accept a bone screw; and

a spherical reamer operable to prepare a surface of the joint.

16. The set of surgical components as defined in claim 15 wherein said spherical reamer is a convex spherical reamer.

17. The set of surgical components as defined in claim 15 wherein said spherical reamer is a concave spherical reamer.

18. The set of surgical components as defined in claim 16 wherein said second surface of said fixation component has a spherical convex shape.

19. The set of surgical components as defined in claim 17 wherein said second surface of said fixation component has a spherical concave shape.

20. The set of surgical components as defined in claim 15 further comprising a coupling member operable to be removably secured between said head member and said fixation component.

21. The set of surgical components as defined in claim 15 wherein said fixation component defines a plurality of holes passing through said first and second surfaces that are operable to receive bone screws.

22. The set of surgical components as defined in claim 15 further comprising a glenoid prosthetic configured to mate with the head member.

23. A set of surgical components for use in a humeral arthroplasty to reconstruct a head of a humerus, said set of surgical components comprising:

a modular humeral component adapted to be implanted into the humerus having a humeral head and neck to engage an articulating surface, the humeral component including a head member having a first articulating surface and a second fixation surface, said first articulating surface adapted to permit rotational and transitional movement of said modular humeral component and said second fixation surface adapted to be secured to a fixation component, said fixation component having a first surface adapted to be secured to said second fixation surface of said head member and a second surface having a depending fixation peg adapted to be secured only with at least one of the head and neck or the head of the humerus, said fixation component defines a hole configured to accept a bone screw; and

a spherical reamer operable to prepare a surface of the humerus.

24. A modular joint component for use in a joint arthroplasty, said modular joint component adapted to be implanted into a joint having a head and a neck to engage an articulating surface of the joint, said modular joint component comprising:

a head member having a first articulating surface and a second fixation surface opposite said first articulating surface, said first articulating surface operable to engage the articulating surface of the joint and said second fixation surface being adapted to be secured to a fixation component; and

said fixation component having a first surface adapted to be secured to said second fixation surface of said head member and a second surface which is generally opposite the first surface, said second surface having a fixation member adapted to be secured within at least one of the head and the head and neck of the joint, said fixation component and fixation member defining a bone screw accepting aperture.

25. The modular joint component as defined in claim 24 wherein said fixation component first surface comprises a Morse taper.

26. The modular joint component as defined in claim 24 wherein said second surface of said fixation element has a spherical convex shape.

27. The modular joint component as defined in claim 25 wherein the Morse taper is a male Morse taper.

28. The modular joint component as defined in claim 25 wherein the Morse taper is a female Morse taper.

29. The modular joint component as defined in claim 25 wherein the Morse taper defines a portion of the bone screw accepting aperture.

30. The modular joint component as defined in claim 27 wherein said first surface of said fixation element is at least one of a generally flat shape and a generally spherical shape.

31. The modular joint component as defined in claim 24 wherein said second surface of said fixation element has a spherical concave shape.

32. The modular joint component as defined in claim 24 wherein said first surface of said fixation element is at least one of a generally flat shape and a generally spherical shape.

33. The modular joint component of claim 24 wherein said fixation component has a generally planar shape.

34. A modular joint component for use in a joint arthroplasty, said modular joint component adapted to be implanted into a joint having a head and a neck to engage an articulating surface of the joint, said modular joint component comprising:

a head member having a first articulating surface and a second fixation surface opposite said first articulating surface, said first articulating surface operable to engage the articulating surface of the joint and said second fixation surface being adapted to be secured to a head fixation portion of a bone fixation component;

said shelf member having a coupling surface which is configured to be placed adjacent a resected bone, said shelf member defining a fixation member accepting aperture; and

the bone fixation component adapted to be secured within the fixation member accepting aperture, said fixation component defining a bone engaging member and a head fixation portion.

35. The modular joint component as defined in claim 34 wherein said head fixation portion comprises a Morse taper.

36. The modular joint component as defined in claim 35 wherein the Morse taper is a male Morse taper.

37. The modular joint component as defined in claim 35 wherein the Morse taper is a female Morse taper.

38. The modular joint component as defined in claim 34 wherein said coupling surface of said shelf member has a spherical convex shape.

39. The modular joint component as defined in claim 34 wherein the Morse taper defines a drive feature.

40. The modular joint component as defined in claim 34 wherein said shelf member has a first surface that is generally opposite the coupling surface that is at least one of a generally flat shape and a generally spherical shape.