# US 11,026,799 B2 · Ethnic-specific orthopaedic implants and custom cutting jigs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,799 B2 - Document ID: US11026799B2 - Status: Granted - Kind: B2 - Application number: 16/151,070 - Filed: 2018-10-03 - Published: 2019-02-14 - Granted: 2021-06-08 - Earliest claimed: 2009-02-25 - Assignees: Zimmer, Inc. - Applicants: Zimmer, Inc. - Inventors: Mohamed Rashwan Mahfouz - Web page: https://patentgrep.com/patent/US11026799B2 ## CPC - A61F 2/3859: {Femoral components} - A61B 17/14: Surgical saws ({A61B17/1637 takes precedence;} dental saws for teeth A61C3/12) - A61B 17/155: {Cutting femur} - A61B 17/1626: {Control means; Display units} - A61B 34/30: Surgical robots - A61F 2/389: {Tibial components (A61F2/3868 takes precedence)} - A61B 17/1675: {for the knee} - A61B 17/1764: {for the knee} - A61B 2017/568: {produced with shape and dimensions specific for an individual patient} - 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} - A61B 2034/107: {Visualisation of planned trajectories or target regions} - A61F 2002/30952: {using CAD-CAM techniques or NC-techniques} - Y10T 29/49: Method of mechanical manufacture - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## 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 ### Claim 1 An orthopedic implant comprising: a distal femoral component comprising a first condyle bearing surface having a first profile formed of a plurality of consecutive arcs of curvature selected based on an identified ethnic descent of a patient, the plurality of consecutive arcs selected as a single set of arcs including one of: a first set of arcs including a total of three separate arcs of curvature corresponding with a patient being of Asian descent, a second set of arcs including a total of four separate arcs of curvature corresponding with a patient being of African descent, or a third set of arcs including a total of four separate arcs of curvature corresponding with a patient being of European descent; and a proximal tibial component comprising a first condyle bearing surface having a second profile comprising at least three parallel arcs of curvature. ### Claim 2 (depends on 1) The orthopedic implant of claim 1, wherein the second profile is customized for a patient of one of Asian descent, African descent, or European descent. ### Claim 3 (depends on 1) The orthopedic implant of claim 1, wherein: the proximal tibial component further comprises a second condyle bearing surface having a third profile formed of a second plurality of arcs of curvature selected based on the identified ethnic descent of the patient, the second plurality of consecutive arcs selected as a single set of arcs including one of: a fourth set of arcs including a total of three parallel arcs of curvature corresponding with a patient being of Asian descent, a fifth set of arcs including a total of four parallel arcs of curvature corresponding with a patient being of African descent, or a sixth set of arcs including a total of four different parallel arcs of curvature corresponding with a patient being of European descent; and the second profile being customized for a patient of Asian descent, African descent, or European descent. ### Claim 4 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic descent of the patient being African and an identified gender of the patient being male: the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature; the second profile of the first condyle bearing surface on the proximal tibial component and the third profile of the second condyle of the distal femoral component are each comprised of at least four separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 57 and 67 millimeters; and a medial-lateral dimension of the orthopedic implant is between 75 and 95 millimeters. ### Claim 5 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic of the patient descent being European and an identified gender of the patient being male: the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature; the second profile of the first condyle bearing surface on the proximal tibial component and the third profile of the second condyle of the distal femoral component are each comprised of four separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 57 and 67 millimeters; and a medial-lateral dimension of the orthopedic implant is between 80 and 95 millimeters. ### Claim 6 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic descent of the patient being Asian and an identified gender of the patient being male: the distal femoral component further comprises a second condyle having a third profile comprising at least three separate arcs of curvature; the second profile of the first condyle bearing surface on the proximal tibial component and the third profile of the second condyle of the distal femoral component are each comprised of three separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 50 and 60 millimeters; and a medial-lateral dimension of the orthopedic implant is between 77 and 92 millimeters. ### Claim 7 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic descent of the patient being African and an identified gender of the patient being female: the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature; the second profile of the first condyle bearing surface on the proximal tibial component and the third profile of the second condyle of the distal femoral component are each comprised of four separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 50 and 65 millimeters; and a medial-lateral dimension of the orthopedic implant is between 70 and 85 millimeters. ### Claim 8 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic descent of the patient being European and an identified gender of the patient being female: the distal femoral component further comprises a second condyle having a third profile comprising at least four separate arcs of curvature; the second profile of the first condyle bearing surface on the proximal tibial component and the third profile of the second condyle of the distal femoral component are each comprised of four separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 48 and 63 millimeters; and a medial-lateral dimension of the orthopedic implant is between 70 and 82 millimeters. ### Claim 9 (depends on 1) The orthopedic implant of claim 1, wherein: based on the identified ethnic descent of the patient being Asian and an identified gender of the patient being female: the distal femoral component further comprises a second condyle having a third profile comprising at least three separate arcs of curvature; the first profile of the first condyle bearing surface on the distal femoral component and the second profile of the first condyle bearing surface on the proximal tibial component are each comprised of three separate arcs of curvature; an anterior-posterior dimension of the orthopedic implant is between 45 and 55 millimeters; and a medial-lateral dimension of the orthopedic implant is between 67 and 85 millimeters. ### Claim 10 (depends on 1) The orthopedic implant of claim 1, wherein the identified ethnic descent of the patient is identified prior to selection of the single set of arcs. ### Claim 11 An orthopedic implant comprising: a distal femoral component comprising a first condyle bearing surface having a first profile based on an identified ethnic descent of a patient, the first profile based on a set of arcs selected, based on the identified ethnic descent of the patient, from the group consisting of: a first set of arcs corresponding with a patient of Asian descent and including a total of three separate arcs of curvature, a second set of arcs corresponding with a patient of African descent and including a total of four separate arcs of curvature, and a third set of arcs corresponding with a patient of European descent and including a total of four separate arcs of curvature; and a proximal tibial component comprising a second condyle bearing surface having a second profile based on at least three parallel arcs of curvature. ### Claim 12 (depends on 11) The orthopedic implant of claim 11, wherein the first profile is in a sagittal plane. ### Claim 13 (depends on 11) The orthopedic implant of claim 11, wherein the set of arcs are defined by at least: a first plane corresponding to a medial anterior point of the first condyle bearing surface of the distal femoral component; a second plane corresponding to a medial distal point of the first condyle bearing surface of the distal femoral component; and a third plane corresponding to a medial posterior point of the first condyle bearing surface of the distal femoral component. ### Claim 14 (depends on 11) The orthopedic implant of claim 11, wherein: an anterior-posterior dimension of the orthopedic implant is within a first range based on the identified ethnic descent of the patient, an identified gender of the patient, or a combination thereof; and a medial-lateral dimension of the orthopedic implant is within a second range based on the identified ethnic descent of the patient, the identified gender of the patient, or a combination thereof. ### Claim 15 (depends on 14) The orthopedic implant of claim 14, wherein, based on the identified ethnic descent of the patient being African and the identified gender of the patient being male: the anterior-posterior dimension of the orthopedic implant is between 57 and 67 millimeters; and the medial-lateral dimension of the orthopedic implant is between 75 and 95 millimeters. ### Claim 16 (depends on 14) The orthopedic implant of claim 14, wherein based on the identified ethnic descent of the patient being European and the identified gender of the patient being male: the anterior-posterior dimension of the orthopedic implant is between 57 and 67 millimeters; and the medial-lateral dimension of the orthopedic implant is between 80 and 95 millimeters. ### Claim 17 (depends on 14) The orthopedic implant of claim 14, wherein based on the identified ethnic descent of the patient being Asian and the identified gender of the patient being male: the anterior-posterior dimension of the orthopedic implant is between 50 and 60 millimeters; and the medial-lateral dimension of the orthopedic implant is between 77 and 92 millimeters. ### Claim 18 (depends on 14) The orthopedic implant of claim 14, wherein based on the identified ethnic descent of the patient being African and the identified gender of the patient being female: the anterior-posterior dimension of the orthopedic implant is between 50 and 65 millimeters; and the medial-lateral dimension of the orthopedic implant is between 70 and 85 millimeters. ### Claim 19 (depends on 14) The orthopedic implant of claim 14, wherein based on the identified ethnic descent of the patient being European and the identified gender of the patient being female: the anterior-posterior dimension of the orthopedic implant is between 48 and 63 millimeters; and the medial-lateral dimension of the orthopedic implant is between 70 and 82 millimeters. ### Claim 20 (depends on 14) The orthopedic implant of claim 14, wherein based on the identified ethnic descent of the patient being Asian and the identified gender of the patient being female: the anterior-posterior dimension of the orthopedic implant is between 45 and 55 millimeters; and the medial-lateral dimension of the orthopedic implant is between 67 and 85 millimeters.