System and method for surgically-preparing a patient's femur

Patent metadata

Field	Value
Publication number	US-12011371-B2
Application number	US-202217884066-A
Country	US
Kind code	B2
Filing date	Aug 9, 2022
Priority date	May 18, 2016
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.

First claim

The invention claimed is:

1. A method of performing an orthopaedic surgical procedure, the method comprising:
securing an offset guide to an intramedullary orthopaedic surgical instrument by:
(i) inserting a connector located at a proximal end of the offset guide into an opening defined in a distal end of the intramedullary orthopaedic surgical instrument to prevent relative rotational movement between the proximal end of the offset guide and the intramedullary orthopaedic surgical instrument, and
(ii) engaging a sleeve with the intramedullary orthopaedic surgical instrument to secure the intramedullary orthopaedic surgical instrument to the offset guide;

attaching an offset indicator to a distal end of the offset guide by inserting a plug of the offset indicator into a distal aperture defined in the offset guide, wherein inserting the plug of the offset indicator includes receiving an alignment tab of the plug into a corresponding groove of the offset guide; and
rotating the offset indicator about a longitudinal axis extending parallel to, and spaced apart from, a longitudinal axis defined by the intramedullary orthopaedic surgical instrument to determine an offset orientation for a prosthetic femoral component.

2. The method of claim 1 , wherein engaging the sleeve with the intramedullary orthopaedic surgical instrument includes advancing the sleeve toward the proximal end of the offset guide and engaging a threaded outer surface of the sleeve with a threaded inner surface of the intramedullary orthopaedic surgical instrument.

3. The method of claim 2 , wherein inserting the connector located at the proximal end of the offset guide into the opening defined in the distal end of the intramedullary orthopaedic surgical instrument includes inserting a triangular-shaped connector into a plurality of slots defined in the threaded inner surface of the intramedullary orthopaedic surgical instrument.

4. The method of claim 1 , further comprising securing a stem stabilizer to a stem trial to form the intramedullary orthopaedic surgical instrument.

5. The method of claim 1 , further comprising:
inserting the intramedullary orthopaedic surgical instrument into an opening defined in a distal end of a patient's femur,
wherein rotating the offset indicator comprises rotating the distal end of the offset guide about the longitudinal axis defined by the intramedullary orthopaedic surgical instrument to determine an offset orientation for the prosthetic femoral component.

6. The method of claim 5 , further comprising:
securing the distal end of the offset guide to a femoral cutting block including a plurality of cutting slots,
wherein rotating the offset indicator includes rotating the femoral cutting block relative to a distal surface of the patient's femur.

7. The method of claim 6 , further comprising:
attaching a first arm of a femoral positioning block to the femoral cutting block, and positioning a second arm of the femoral positioning block on a proximal end of the patient's tibia such that a predetermined gap is defined between the patient's tibia and the femoral cutting block, wherein rotating the offset indicator includes adjusting a distance between the patient's tibia and the patient's femur while rotating the femoral cutting block relative to the distal surface of the patient's femur.

8. The method of claim 6 , further comprising resecting a portion of the distal end of the patient's femur.

9. The method of claim 8 , further comprising detaching the offset guide from the femoral cutting block and removing the intramedullary orthopaedic surgical instrument from the opening in the patient's femur.

10. The method of claim 1 , further comprising inserting a driver through a passageway defined through the offset indicator and into a socket defined in the distal end of the offset guide.

11. A method of performing an orthopaedic surgical procedure, the method comprising:
securing an offset guide to an intramedullary orthopaedic surgical instrument by:
(i) aligning a distal end of the intramedullary orthopaedic surgical instrument with a proximal end of the offset guide,
(ii) positioning a connector located at the proximal end of the offset guide into an opening defined in the distal end of the intramedullary orthopaedic surgical instrument to prevent relative rotational movement between the proximal end of the offset guide and the intramedullary orthopaedic surgical instrument, and
(iii) engaging a sleeve with the intramedullary orthopaedic surgical instrument to secure the intramedullary orthopaedic surgical instrument to the offset guide;

inserting the offset guide and the intramedullary orthopaedic surgical instrument through a passageway defined through a femoral cutting block including a plurality of cutting slots;
positioning a pair of retaining flanges of the offset guide into a corresponding pair of apertures located on opposing sides of the passageway defined through the femoral cutting block; and
rotating a pair of locking tabs of the femoral cutting block to a locked position in which each locking tab engages a corresponding retaining flange of the offset guide to secure the offset guide to the femoral cutting guide.

12. The method of claim 11 , wherein rotating the pair of locking tabs of the femoral cutting block comprises rotating each locking tab from an unlocked position in which an ear of the corresponding locking tab faces away from the passageway defined through the femoral cutting block to the locked position in which the ear of the corresponding locking tab faces toward the passageway defined through the femoral cutting block.

13. The method of claim 12 , wherein rotating each locking tab to the locked position comprises rotating each locking tab to the locked position such that the ear of the corresponding lock tab is positioned over the corresponding retaining flange of the offset guide.

14. The method of claim 11 , wherein engaging the sleeve with the intramedullary orthopaedic surgical instrument includes advancing the sleeve toward the proximal end of the offset guide and engaging a threaded outer surface of the sleeve with a threaded inner surface of the intramedullary orthopaedic surgical instrument.

15. The method of claim 11 , wherein positioning the connector at the proximal end of the offset guide in the opening defined in the distal end of the intramedullary orthopaedic surgical instrument includes positioning a triangular-shaped connector into a plurality of slots defined in the threaded inner surface of the intramedullary orthopaedic surgical instrument.

16. The method of claim 11 , further comprising securing a stem stabilizer to a stem trial to form the intramedullary orthopaedic surgical instrument.

17. The method of claim 11 , further comprising:
inserting the intramedullary orthopaedic surgical instrument into an opening defined in a distal end of a patient's femur, and
rotating a distal end of the offset guide about a longitudinal axis extending through the intramedullary orthopaedic surgical instrument to determine an offset orientation for a prosthetic femoral component.

18. The method of claim 17 , further comprising:
attaching an offset indicator to the distal end of the offset guide,
wherein rotating the distal end of the offset guide includes rotating the offset indicator about a second longitudinal axis extending parallel to, and spaced apart from, the longitudinal axis extending through the intramedullary orthopaedic surgical instrument.

19. The method of claim 18 , further co

Assignees

• Depuy Ireland Ultd Co

Inventors

• Wolfson David R
• Barnett James E
• Penninger Charles L
• Reeve Michael R
• Meggett Philip R
• Chaney Rebecca L

Classifications

• A61F2002/30736

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

• A61B2090/036

  abutting on tissue or skin · CPC title

• A61F2002/4687

  Mechanical guides for implantation instruments · CPC title

• A61F2002/3863

  Condyles fitted on an anchored base · CPC title

• A61F2/389

  Tibial components (A61F2/3868 takes precedence) · CPC title