Ethnic-specific orthopaedic implants and custom cutting jigs

• US 10,130,478 B2
• Filed: 06/09/2015
• Issued: 11/20/2018
• Est. Priority Date: 02/25/2009
• Status: Active Grant

• Current Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Mahfouz, Mohamed Rashwan
• Primary Examiner(s): Stewart, Alvin
• Application Number:
  US14/734,491
• Publication Number:
  US 20160000571A1
• Time in Patent Office: 1,260 Days
• CPC Class Codes: A61B 17/14 Surgical saws A61B17/1637 takes precedence; tooth saws A61C3/12 ; Accessories therefor
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/104 Modelling the effect of the tool, e.g. the effect of an implanted prosthesis or for predicting the effect of ablation or burring
• CPC Class Codes: A61B 2034/107 Visualisation of planned trajectories or target regions
• CPC Class Codes: A61B 34/30 Surgical robots
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture

Abstract

An orthopedic implant comprising: (a) a distal femoral component comprising a first condyle bearing surface having a first profile comprising at least three consecutive arcs of curvature; and (b) a proximal tibial component comprising a first condyle bearing surface having a second profile comprising at least three parallel arcs of curvature.

Claims

1. An orthopedic implant comprising:

a distal femoral component comprising a first condyle bearing surface having a first profile comprising a plurality of consecutive arcs of curvature, the number of consecutive arcs of curvature being selected based on at least an ethnic descent of a patient to customize the distal femoral component for a patient of said ethnic descent, the number of consecutive arcs of curvature being unique for each ethnic descent; and

a proximal tibial component comprising a first condyle bearing surface having a second profile comprising at least three parallel arcs of curvature.

2. The orthopedic implant of claim 1, wherein:

the first profile is comprised of only three separate arcs of curvature; and

,

the distal femoral component is customized for a patient of Asian descent.

3. The orthopedic implant of claim 1, wherein:

the first profile is comprised of four separate arcs of curvature; and

,

the distal femoral component is customized for a patient of African descent.

4. The orthopedic implant of claim 1, wherein:

the first profile is comprised of four separate arcs of curvature; and

,

the distal femoral component is customized for a patient of European descent.

5. The orthopedic implant of claim 1, wherein the second profile is customized for a patient of Asian descent.

6. The orthopedic implant of claim 1, wherein the second profile is customized for a patient of African descent.

7. The orthopedic implant of claim 1, wherein the second profile is customized for a patient of European descent.

8. The orthopedic implant of claim 1, wherein:

the proximal tibial component further comprises a second condyle bearing surface having a third profile comprising three parallel arcs of curvature; and

,

the second and third profiles are customized for a patient of Asian descent.

9. The orthopedic implant of claim 1, wherein:

the proximal tibial component further comprises a second condyle bearing surface having a third profile comprising four parallel arcs of curvature; and

,

the second and third profiles are customized for a patient of African descent.

10. The orthopedic implant of claim 1, wherein:

the proximal tibial component further comprises a second condyle bearing surface having a third profile comprising four parallel arcs of curvature; and

,

the second and third profiles are customized for a patient of European descent.

11. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature;

the second and third convex profiles are each comprised of at least four separate arcs of curvature;

an anterior-posterior dimension of the implant is between 57 and 67 millimeters for a male patient of African descent; and

,

a medial-lateral dimension of the implant is between 75 and 95 millimeters for a male patient of African descent.

12. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature;

the second and third profiles are each comprised of four separate arcs of curvature;

an anterior-posterior dimension of the implant is between 57 and 67 millimeters for a male patient of European descent; and

,

a medial-lateral dimension of the implant is between 80 and 95 millimeters for a male patient of European descent.

13. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least three separate arcs of curvature;

the second and third profiles are each comprised of three separate arcs of curvature;

an anterior-posterior dimension of the implant is between 50 and 60 millimeters for a male patient of Asian descent; and

,

a medial-lateral dimension of the implant is between 77 and 92 millimeters for a male patient of Asian descent.

14. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature;

the second and third profiles are each comprised of four separate arcs of curvature;

an anterior-posterior dimension of the implant is between 50 and 65 millimeters for a female patient of African descent; and

,

a medial-lateral dimension of the implant is between 70 and 85 millimeters for a female patient of African descent.

15. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature;

the second and third profiles are each comprised of four separate arcs of curvature;

an anterior-posterior dimension of the implant is between 48 and 63 millimeters for a female patient of European descent; and

,

a medial-lateral dimension of the implant is between 70 and 82 millimeters for a female patient of European descent.

16. The orthopedic implant of claim 1, wherein:

the distal femoral component further comprises a second condyle having a third profile comprising at least three separate arcs of curvature;

the first and second convex profiles are each comprised of three separate arcs of curvature;

an anterior-posterior dimension of the implant is between 45 and 55 millimeters for a female patient of Asian descent; and

,

a medial-lateral dimension of the implant is between 67 and 85 millimeters for a female patient of Asian descent.