# US 9,433,494 B2 · Prosthesis for simulating natural kinematics > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,433,494 B2 - Document ID: US9433494B2 - Status: Granted - Kind: B2 - Application number: 14/666,565 - Filed: 2015-03-24 - Published: 2015-07-16 - Granted: 2016-09-06 - Earliest claimed: 2007-11-02 - Assignees: Biomet UK Limited - Applicants: Biomet UK Limited - Inventors: David Wolfson; Russell Lloyd; John Joseph O'Connor; Mohammed Imran Khan; David Wycliffe Murray; Christopher Alexander Dodd; John William Goodfellow - Web page: https://patentgrep.com/patent/US9433494B2 ## CPC - A61F 2/0811: {Fixation devices for tendons or ligaments} - A61F 2/3094: {Designing or manufacturing processes} - A61F 2/38: for elbows or knees - A61F 2/3836: {Special connection between upper and lower leg, e.g. constrained} - A61F 2/3868: {with sliding tibial bearing} - A61F 2/08: Muscles; Tendons; Ligaments - A61F 2002/0847: {Mode of fixation of anchor to tendon or ligament} - A61F 2002/30462: {retained or tied with a rope, string, thread, wire or cable} - A61F 2220/0075: sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable - Y10T 29/49707: Bearing surface treatment - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A bearing component 2 for a joint replacement prosthesis comprises a first bearing element 4; a second bearing element 6, and a linking element 8, operatively connecting the first and second bearing elements 4, 6 and permitting relative motion there between. The flexible linking element 8 prevents dislocation of mobile bearings in a total knee replacement prosthesis. The invention also relates to a bridging element which retains the linking element 8 with some play, which acts as a ligament support 2051, and which causes a deflection of the line of action of a ligament 1018. A joint replacement prosthesis is also disclosed comprising a biasing element 1140 or a tensioning element 1220 operatively coupled to the artificial ligament 1018. The biasing element 1140 or tensioning element 1220 may be housed in the stem of a tibia tray 1006. ## Claims ### Claim 1 A prosthesis comprising: a tibial tray including a body defining a bore having a mouth, the bore opening onto a bearing surface extending perpendicular to the mouth; a femoral component; an artificial ligament coupled to the tibial tray and the femoral component; and a ligament support configured to at least partially determine a line of action of the artificial ligament, wherein the ligament support comprises a lug attached to the bearing surface and projecting to a position over the mouth to prevent the artificial ligament from touching the mouth. ### Claim 2 (depends on 1) The prosthesis of claim 1, wherein the artificial ligament is secured within the bore. ### Claim 3 (depends on 1) The prosthesis of claim 1, wherein the mouth of the bore is chamfered. ### Claim 4 (depends on 1) The prosthesis of claim 1, wherein the artificial ligament is secured to a surface of the bore. ### Claim 5 (depends on 1) The prosthesis of claim 1, further comprising an adjustable tensioning element adjustably positionable within the bore and configured to adjust a tension on the artificial ligament. ### Claim 6 (depends on 5) The prosthesis of claim 5, further comprising a biasing element positioned within the bore and configured to provide a biasing force on the artificial ligament. ### Claim 7 (depends on 6) The prosthesis of claim 6, further comprising a bearing element positioned within the bore and adjacent the biasing element and configured to engage an end of the artificial ligament. ### Claim 8 A prosthesis comprising: a tibal component having a body that defines a bore formed into the body, the body further defining a bearing surface extending perpendicular to the recess; an artificial ligament configured to be secured within the recess; and a lug extending from the bearing surface and arranged to support the artificial ligament, the lug extending from the bearing surface to a position over the recess to prevent the artificial ligament from touching a mouth of the recess, wherein the lug at least partially determines the line of action of the ligament. ### Claim 9 (depends on 8) The prosthesis of claim 8, wherein the mouth of the recess is chamfered. ### Claim 10 (depends on 8) The prosthesis of claim 8, further compromising a femoral component configured to be secured to the artificial ligament. ### Claim 11 (depends on 8) The prosthesis of claim 8, further compromising an adjustable tensioning member adjustably positioned within the recess and configured to adjust a tension on the artificial ligament. ### Claim 12 (depends on 11) The prosthesis of claim 11, further compromising a biasing element positioned within the recess and adjacent the tensioning member. ### Claim 13 (depends on 12) The prosthesis of claim 12, further compromising a bearing element positioned in the bore and adjacent the biasing member.