# US 11,298,142 B2 · Total joint arthroplasty jig > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,142 B2 - Document ID: US11298142B2 - Status: Granted - Kind: B2 - Application number: 16/725,545 - Filed: 2019-12-23 - Published: 2020-07-02 - Granted: 2022-04-12 - Earliest claimed: 2008-02-29 - Assignees: Howmedica Osteonics Corp. - Applicants: Howmedica Osteonics Corporation - Inventors: Ilwhan Park; Michael Koehle; Lorenzo R. Deveza - Web page: https://patentgrep.com/patent/US11298142B2 ## CPC - A61B 17/175: {for preparing the femur for hip prosthesis insertion} - A61B 17/15: Guides therefor - A61B 34/10: Computer-aided planning, simulation or modelling of surgical operations - A61F 2/3609: {Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts (A61F2/3601 takes precedence)} - G05B 19/41885: {characterised by modeling, simulation of the manufacturing system} - A61B 2017/568: {produced with shape and dimensions specific for an individual patient} - A61B 2034/102: {Modelling of surgical devices, implants or prosthesis} - A61B 2034/105: {Modelling of the patient, e.g. for ligaments or bones} - A61B 2034/107: {Visualisation of planned trajectories or target regions} - A61B 2034/108: {Computer aided selection or customisation of medical implants or cutting guides} - A61F 2/3603: {implanted without ablation of the whole natural femoral head (endoprosthetic cartilage A61F2/30756)} - A61F 2002/30878: {with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts} - A61F 2002/505: {using CAD-CAM techniques or NC-techniques} - B33Y 80/00: Products made by additive manufacturing - Y02P 90/02: Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] - 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) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Disclosed herein is an arthroplasty jig for use in an arthroplasty procedure on a bone of a patient that forms a ball and socket joint. The arthroplasty jig may include a customized mating region and a resection guide. The customized mating region and the resection guide are referenced to each other such that, when the customized mating region matingly engages a surface area of a proximal femur, the resection guide will be aligned to guide a resectioning of the proximal femur along a preoperatively planned resection plane. ## Claims ### Claim 1 An arthroplasty jig for use in performing an arthroplasty procedure on a bone of a patient, the bone forming a portion of a ball and socket joint, the bone comprising a head having an articular surface that is bounded by a neck border, a non-articular surface extending distally from the neck border, and a tubercle formed on non-articular surface of the bone, the arthroplasty jig comprising: a jig body comprising: a first mating surface defined on a bone facing side of the jig body, the first mating surface configured to matingly contact the non-articular surface of the bone in a first location in a customized fashion unique to the patient when the jig body is applied to the bone to perform the arthroplasty procedure; a second mating surface defined on the bone facing side of the jig body, the second mating surface configured to matingly contact the non-articular surface of the bone in a second location in a customized fashion unique to the patient when the jig body is applied to the bone to perform the arthroplasty procedure; a spaced-apart surface defined on the bone facing side of the jig body and separating the first mating surface and the second mating surface, the spaced-apart surface configured to be recessed from contact with the tubercle when the first and second mating surface matingly contact the first and second locations on the non-articular surface, respectively; and a saw guide configured to guide a saw in making a resection of the bone, the saw guide extending through the jig body and comprising a preoperatively planned position and orientation relative to the first and second mating surfaces. ### Claim 2 (depends on 1) The arthroplasty jig of claim 1, wherein the first mating surface, the second mating surface, and the spaced-apart surface are formed in the jig body prior to the jig being used in the arthroplasty procedure. ### Claim 3 (depends on 1) The arthroplasty jig of claim 1, wherein the jig body further comprises a third mating surface defined on the bone facing side of the jig body, the third mating surface configured to matingly contact the non-articular surface of the bone in a third location in a customized fashion unique to the patient when the jig body is applied to the bone to perform the arthroplasty procedure, the third mating surface being separated from the first and second mating surfaces by a portion of the spaced-apart surface. ### Claim 4 (depends on 3) The arthroplasty jig of claim 3, wherein the first mating surface and the third mating surface are separated by the saw guide. ### Claim 5 (depends on 1) The arthroplasty jig of claim 1, wherein the spaced-apart surface is configured to overlay but refrain from contacting the tubercle when the first and second mating surface matingly contact the first and second locations on the non-articular surface, respectively. ### Claim 6 (depends on 1) The arthroplasty jig of claim 1, wherein no surfaces of the jig body are configured to make mating contact with the articular surface of the head of the bone. ### Claim 7 (depends on 1) The arthroplasty jig of claim 1, wherein the jig body further comprises an aperture configured to guide a tool into the bone, the aperture extending through the jig body and comprising a preoperatively planned position and orientation relative to the first and second mating surfaces. ### Claim 8 (depends on 7) The arthroplasty jig of claim 7, wherein the aperture extends through the first mating surface. ### Claim 9 (depends on 1) The arthroplasty jig of claim 1, wherein the saw guide intersects the spaced-apart surface on the jig facing side of the jig body. ### Claim 10 (depends on 1) The arthroplasty jig of claim 1, wherein the saw guide comprises a planar slot. ### Claim 11 (depends on 1) The arthroplasty jig of claim 1, wherein the bone is a femur. ### Claim 12 (depends on 1) The arthroplasty jig of claim 1, wherein the joint is a shoulder. ### Claim 13 (depends on 1) The arthroplasty jig of claim 1, wherein the joint is a hip. ### Claim 14 (depends on 1) The arthroplasty jig of claim 1, wherein the jig body is a single piece structure.