Method to implant a distal radioulnar joint device

Patent metadata

Field	Value
Publication number	US-9918846-B2
Application number	US-201414468835-A
Country	US
Kind code	B2
Filing date	Aug 26, 2014
Priority date	Sep 17, 2009
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A system and method of implanting a distal wrist implant relative to a host bone is presented. A distal radial component having a body including a first connection portion couplable to a stem is coupled to a second prosthetic coupled to a medial surface of the body. The second prosthetic replaces at least a portion of the sigmoid notch.

First claim

What is claimed is:

1. A method of implanting a distal wrist implant relative to a host radius, the method comprising:
selecting a distal radial component, the radial component having a body that includes a stem, a medial connection on a medial side of the body, and a distal articulating surface, the distal articulating surface extending over and beyond the medial connection in a medial direction;
implanting the distal radial component relative to the host radius; and
securing a sigmoidal notch prosthetic, which is separate from the distal radial component including the distal articulating surface of the distal radial component, to the radial component at the medial connection using a sliding mechanism operable between the sigmoidal notch prosthetic and the distal radial component in a direction along the medial connection towards the distal articulating surface, wherein the sigmoidal notch prosthetic includes a bearing surface exposed in a direction away from the medial side of the distal radial component.

2. The method of claim 1 , further comprising coupling a flexible member to the sigmoidal notch prosthetic.

3. The method of claim 2 , wherein coupling the flexible member comprises locating the flexible member through an aperture formed in the sigmoidal notch prosthetic.

4. The method of claim 3 , wherein locating the flexible member comprises passing one of a suture or wire through the aperture.

5. The method of claim 4 , wherein the medial connection is located between the stem and the distal articulating surface.

6. The method of claim 1 , wherein the medial connection is located between the articulating surface of the distal radial component and the host radius.

7. A method of implanting a distal radial wrist implant, the method comprising:
implanting a distal radial component relative to a host radius using a stem of the distal radial component, the distal radial component including a distal articulating surface;
securing at least a portion of the distal radial component to the host radius; and
coupling a sigmoidal notch prosthetic, which is separate from the distal radial component including the distal articulating surface of the distal radial component, to a medial side of the distal radial component using a sliding mechanism operable between the sigmoidal notch prosthetic and a medial connection on the medial side of the distal radial component in a direction along the medial connection towards the distal articulating surface, wherein the distal articulating surface extends over and beyond the medial connection in a medial direction, and wherein the sigmoidal notch prosthetic includes a bearing surface exposed in a direction away from the medial side of the distal radial component.

8. The method of claim 7 , further comprises locating a flexible member around at least a portion of the sigmoidal notch prosthetic.

9. The method of claim 8 , wherein locating the flexible member comprises locating the flexible member through an aperture defined in the sigmoidal notch prosthetic.

10. The method of claim 9 , wherein locating the flexible member comprises passing one of a suture or wire through the aperture.

11. The method of claim 10 , comprising locating the sigmoidal notch prosthetic adjacent to the host radius.

Assignees

• Biomet Mfg Llc

Inventors

• Palmer Andrew K

Classifications

• A61F2002/30878

  with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts · CPC title

• A61F2002/30579

  with mechanically expandable devices, e.g. fixation devices · CPC title

• A61F2002/30507

  using a threaded locking member, e.g. a locking screw or a set screw · CPC title

• A61F2220/0025

  Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements · CPC title

• A61F2002/30383

  made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove · CPC title