# US 10,245,047 B2 · Unicompartmental customized arthroplasty cutting jigs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,047 B2 - Document ID: US10245047B2 - Status: Granted - Kind: B2 - Application number: 15/703,519 - Filed: 2017-09-13 - Published: 2018-01-04 - Granted: 2019-04-02 - Earliest claimed: 2008-12-16 - Assignees: Howmedica Osteonics Corp. - Applicants: Howmedica Osteonics Corporation - Inventors: Ilwhan Park; Michael Koehle; Lorenzo R. Deveza - Web page: https://patentgrep.com/patent/US10245047B2 ## CPC - A61B 17/1764: {for the knee} - A61B 17/155: {Cutting femur} - A61B 17/157: {Cutting tibia} - A61B 2034/105: {Modelling of the patient, e.g. for ligaments or bones} - A61B 2034/108: {Computer aided selection or customisation of medical implants or cutting guides} - A61F 2/3836: {Special connection between upper and lower leg, e.g. constrained} - B33Y 80/00: Products made by additive manufacturing - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING ## Abstract Disclosed herein are unicompartmental femoral and tibial arthroplasty jigs for respectively assisting in the performance of unicompartmental femoral and tibial arthroplasty procedures on femoral and tibial arthroplasty target regions. The jigs each include a mating surface. The mating surface of the femoral jig is configured to matingly receive and contact a generally planar area of an anterior side of a femoral shaft generally proximal of the patellar facet border and generally distal an articularis genu. The mating surface of the tibial jig is configured to matingly receive and contact a generally planar area of an anterior side of a tibial shaft distal of the tibial plateau edge and generally proximal of the tibial tuberosity. ## Claims ### Claim 1 A femoral arthroplasty jig for assisting in the performance of a femoral arthroplasty procedure on a femoral arthroplasty target region of a femur of a patient, the femur including an intercondylar notch, an articular condyle surface, an articular trochlear groove surface, and an area between an articularis genu and a patellar facet boarder on an anterior side of a femoral shaft, the articular condyle surface including a medial articular condyle surface and a lateral articular condyle surface, the articular trochlear groove surface including an anterior-proximal trochlear groove surface with an anterior-proximal edge, the jig comprising: a mating surface including a customized surface contour that is a negative of certain surfaces of the femoral arthroplasty target region, the mating surface configured to matingly receive and contact the certain surfaces of the femoral arthroplasty target region, the certain surfaces including the articular condyle surface, the articular trochlear groove surface, and at least one contact point on the anterior-proximal edge of the anterior-proximal trochlear groove surface, the certain surfaces not including the intercondylar notch, wherein a portion of the mating surface configured to matingly receive and contact the at least one contact point comprises at least one hooking point configured to contact a proximal portion of the anterior-proximal edge of the anterior-proximal trochlear groove surface. ### Claim 2 (depends on 1) The femoral arthroplasty jig of claim 1, wherein the certain surfaces further include the area between the articularis genu and the patellar facet boarder of the anterior side of the femoral shaft, the area being proximal to the at least one contact point. ### Claim 3 (depends on 1) The femoral arthroplasty jig of claim 1, further comprising a cutting guide surface positioned and oriented relative to the mating surface to result in a cut in the femoral arthroplasty target region with a desired position and orientation. ### Claim 4 (depends on 3) The femoral arthroplasty jig of claim 3, wherein the desired position and orientation allows a prosthetic femoral implant to restore a patient's knee joint to a natural alignment. ### Claim 5 (depends on 3) The femoral arthroplasty jig of claim 3, further comprising a jig body of unitary construction and wherein the cutting guide surface and the mating surface are defined in the jig body. ### Claim 6 (depends on 1) The femoral arthroplasty jig of claim 1, wherein the jig is a unicompartmental femoral arthroplasty jig configured for assisting in the performance of a unicompartmental femoral arthroplasty procedure. ### Claim 7 (depends on 1) The femoral arthroplasty jig of claim 1, wherein a portion of the articular condyle surface configured to be matingly received and contacted by the mating surface is limited to the medial articular condyle surface. ### Claim 8 (depends on 7) The femoral arthroplasty jig of claim 7, wherein the medial articular condyle surface is limited to anterior and distal regions of the medial articular condyle surface. ### Claim 9 (depends on 1) The femoral arthroplasty jig of claim 1, wherein the articular trochlear groove surface is limited to anterior and distal regions of a medial articular trochlear groove surface. ### Claim 10 (depends on 1) The femoral arthroplasty jig of claim 1, wherein the articular trochlear groove surface is limited to regions of a lateral articular trochlear groove surface and a medial articular trochlear groove surface. ### Claim 11 (depends on 1) The femoral arthroplasty jig of claim 1, wherein the articular trochlear groove surface is limited to anterior and distal regions of a lateral articular trochlear groove surface and anterior and distal regions of a medial articular trochlear groove surface. ### Claim 12 A femoral arthroplasty jig for assisting in the performance of a femoral arthroplasty procedure on a femoral arthroplasty target region of a femur of a patient, the femur including an articular condyle surface, an articular trochlear groove surface, and an area between an articularis genu and a patellar facet boarder on an anterior side of a femoral shaft, the articular condyle surface including a medial articular condyle surface and a lateral articular condyle surface, the articular trochlear groove surface including an anterior-proximal trochlear groove surface with an anterior-proximal edge, the jig comprising: a mating surface including a customized surface contour that is a negative of certain surfaces of the femoral arthroplasty target region, the mating surface configured to matingly receive and contact the certain surfaces of the femoral arthroplasty target region, the certain surfaces including the articular condyle surface, the articular trochlear groove surface, and at least one contact point on the anterior-proximal edge of the anterior-proximal trochlear groove surface, the at least one contact point comprises at least one hooking point configured to contact a proximal portion of the anterior-proximal edge of the anterior-proximal trochlear groove surface. ### Claim 13 (depends on 12) The femoral arthroplasty jig of claim 12, further comprising a cutting guide surface positioned and oriented relative to the mating surface to result in a cut in the femoral arthroplasty target region with a desired position and orientation. ### Claim 14 (depends on 13) The femoral arthroplasty jig of claim 13, wherein the desired position and orientation allows a prosthetic femoral implant to restore a patient's knee joint to a natural alignment. ### Claim 15 (depends on 13) The femoral arthroplasty jig of claim 13, further comprising a jig body of unitary construction and wherein the cutting guide surface and the mating surface are defined in the jig body. ### Claim 16 (depends on 12) The femoral arthroplasty jig of claim 12, wherein the jig is a unicompartmental femoral arthroplasty jig configured for assisting in the performance of a unicompartmental femoral arthroplasty procedure. ### Claim 17 (depends on 12) The femoral arthroplasty jig of claim 12, wherein a portion of the articular condyle surface configured to be matingly received and contacted by the mating surface is limited to the medial articular condyle surface. ### Claim 18 (depends on 12) The femoral arthroplasty jig of claim 12, wherein the certain surfaces further include the area between the articularis genu and the patellar facet boarder of the anterior side of the femoral shaft, the area being proximal to the at least one contact point. ### Claim 19 A femoral arthroplasty jig for assisting in the performance of a femoral arthroplasty procedure on a femoral arthroplasty target region of a femur of a patient, the femur including an intercondylar notch, an articular condyle surface, an articular trochlear groove surface, and an area between an articularis genu and a patellar facet boarder on an anterior side of a femoral shaft, the articular condyle surface including a medial articular condyle surface and a lateral articular condyle surface, the articular trochlear groove surface including an anterior-proximal trochlear groove surface with an anterior-proximal edge, the jig comprising: an exterior portion; and an interior portion opposite the exterior portion, the interior portion comprising a mating surface comprising a distal condylar mating surface and an anterior mating surface, the distal condylar mating surface configured to matingly receive and contact the articular condyle surface, and the articular trochlear groove surface, the anterior mating surface defined on an anterior flange of the jig and including a hooking portion, the hooking portion comprising at least one hooking point configured to contact a proximal portion of the anterior-proximal edge of the anterior proximal trochlear groove surface. ### Claim 20 (depends on 19) The femoral arthroplasty jig of claim 19, further comprising a cutting guide surface positioned and oriented relative to the mating surface to result in a cut in the femoral arthroplasty target region with a desired position and orientation. ### Claim 21 (depends on 20) The femoral arthroplasty jig of claim 20, wherein the desired position and orientation allows a prosthetic femoral implant to restore a patient's knee joint to a natural alignment. ### Claim 22 (depends on 20) The femoral arthroplasty jig of claim 20, further comprising a jig body of unitary construction and wherein the cutting guide surface and the mating surface are defined in the jig body. ### Claim 23 (depends on 19) The femoral arthroplasty jig of claim 19, wherein the jig is a unicompartmental femoral arthroplasty jig configured for assisting in the performance of a unicompartmental femoral arthroplasty procedure. ### Claim 24 (depends on 19) The femoral arthroplasty jig of claim 19, wherein a portion of the articular condyle surface configured to be matingly received and contacted by the distal condylar mating surface is limited to the medial articular condyle surface. ### Claim 25 (depends on 19) The femoral arthroplasty jig of claim 19, wherein the anterior mating surface comprises a portion configured to matingly receive and contact the area between the articularis genu and the patellar facet boarder of the anterior side of the femoral shaft, the area being proximal to the at least one contact point. ### Claim 26 (depends on 19) The arthroplasty jig of claim 19, wherein neither the distal condyle surface nor the anterior mating surface is configured to matingly receive and contact the intercondylar notch.