Methods of implanting orthopedic devices

Patent metadata

Field	Value
Publication number	US-9468530-B2
Application number	US-201514616525-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Jun 8, 2010
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. An implant may include abuse member that has at least two projections with a gap between the projections. The gap between the projections allows the implant to be implanted around another implanted component, such as around a bone screw of an acetabular shell. The implant may include a fixation element, such as a screw or a cement trough, on one or more projections to couple the implant to an implanted acetabular shell. The implant may also include timing marks to facilitate alignment with corresponding marks on another implanted component.

First claim

What is claimed is:

1. A method of implanting an orthopedic device in a patient's acetabulum, the method comprising:
preparing the patient's acetabulum to receive an acetabular shell;
securing the acetabular shell using at least one bone screw;
preparing a space in the patient's acetabulum by use of a broach;
inserting an augment into the prepared space, the augment comprising at least two projections defining a gap therebetween, one or more of the at least two projections comprising a cement trough, wherein the augment is inserted into the prepared space by positioning the augment around the at least one bone screw such that the bone screw extends through the gap; and
after inserting the augment into the prepared space, securing the augment by pouring cement into the cement trough.

2. The method of claim 1 , further comprising fixing the augment further using an augment screw.

3. The method of claim 1 , further comprising attaching the augment to a driver handle.

4. The method of claim 1 , further comprising while inserting the augment, aligning the augment relative to the acetabular shell to facilitate positioning of the bone screw in the gap between the projections.

5. The method of claim 1 , wherein the preparing the space in the patient's acetabulum comprises rasping or reaming the patient's acetabulum with the broach.

6. The method of claim 1 , further comprising limiting an amount of bone removed from the patient's acetabulum by using a depth stop disposed on the broach.

7. The method of claim 1 , wherein a cross-sectional profile of the broach is approximately the same as a cross-sectional profile of the augment.

8. The method of claim 1 , wherein the augment further comprises flanges, blades, plates, or hooks attached thereto.

9. A method of implanting an orthopedic device in a patient's acetabulum, the method comprising:
preparing the patient's acetabulum to receive an acetabular shell;
securing the acetabular shell using at least one bone screw;
preparing a space in the patient's acetabulum by use of a broach;
inserting an augment into the prepared space, the augment comprising at least two projections defining a gap therebetween, one or more of the at least two projections comprising a cement trough, wherein the augment is inserted into the prepared space by positioning the augment around the at least one bone screw such that the bone screw extends through the gap;
while inserting the augment, matching timing marks on the augment to timing marks of the acetabular shell; and
after inserting the augment into the prepared space, securing the augment by pouring cement into the cement trough.

10. The method of claim 9 , further comprising setting the augment using screws.

11. The method of claim 9 , wherein the inserting the augment into the prepared space comprises attaching the augment to a driver handle for positioning the augment into the prepared space.

12. The method of claim 9 , further comprising aligning the augment relative to the acetabular shell using the timing markings to facilitate positioning of the bone screw in the gap between the projections during the inserting of the augment into the prepared space.

13. The method of claim 9 , wherein the preparing the space in the patient's acetabulum comprises rasping or reaming the patient's acetabulum with the broach, and wherein a cross-sectional profile of the broach is approximately the same as a cross-sectional profile of the augment.

Assignees

• Smith & Nephew Inc

Inventors

• Quinn Nathaniel
• Shea Jeffrey Joel

Classifications

• A61F2002/30331

  made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit · CPC title

• A61F2002/30449

  the adhesive being cement · CPC title

• A61F2/30771

  applied in original prostheses, e.g. holes or grooves · CPC title

• A61F2002/30736

  Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect · CPC title

• A61F2/30734

  Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect · CPC title