Tibial Bone Patents (Class 623/20.32)
  • Patent number: 9265613
    Abstract: A cementless orthopedic implant is disclosed. More specifically, but not necessarily entirely, a cementless tibial implant used as a component of a knee joint is disclosed. The tibial component may comprise a tibial tray and stem. The tibial component may be a monoblock design used for both primary and revision surgeries. The stem of the tibial component may comprise a plurality of protruding steps that assist in providing primary fixation and stability without the use of screws or cement. The stem of the tibial component may further comprise a first and second stepped wing portions.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 23, 2016
    Inventor: Russell Nevins
  • Patent number: 9149206
    Abstract: Tibial prosthesis systems for implantation or use in a knee joint are disclosed. A tibial prosthesis system can include a bearing component, a base component, a shim component, and optionally a spacer component. The shim or spacer component can be inserted between an inferior surface of the bearing component and a superior surface of the base component. The insertion of the shim or spacer component can provide spacing adjustment between the bearing and base components. The shim component can include one or both of a medial edge having a different height than a lateral edge or an anterior edge having a different height than a posterior edge. The differing edge height of the shim component can provide a surgeon with knee joint kinematic insight regarding an angled bone cut before the cut is made, and can allow for sizing of an appropriately permanent prosthesis system using a reduced number of provisional components.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 6, 2015
    Assignee: Zimmer, Inc.
    Inventors: Jody Claypool, Wayne Paprosky, David Lewallen, Steven Stump, Stephen E. White
  • Patent number: 9119733
    Abstract: A prosthetic component suitable for trialing or long-term implantation is provided. The prosthetic component includes at least one sensor for measuring a parameter of the muscular-skeletal system or a biological parameter is disclosed. The prosthetic component comprises a conductive material. Electronic circuitry and sensors are housed within the prosthetic component. Data from the prosthetic component can be transmitted to a remote system. The prosthetic component can comprise steel, titanium, cobalt, an alloy, or other conductive material. At least a portion of the conductive material comprising the prosthetic component is coupled to ground to shield the sensor from parasitic coupling that can affect measurement accuracy. The prosthetic component can have an opening in the shield to allow sensing or transmission of data.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 1, 2015
    Assignee: ORTHOSENSOR INC.
    Inventors: Marc Stein, Andrew Chase
  • Patent number: 9113920
    Abstract: A method and apparatus for performing an open wedge osteotomy utilizing a keyed, wedge-shaped implant for disposition in a keyed, wedge-shaped opening created in a bone. The keys may be disposed in vertical or horizontal arrangements. In addition, a shear rib key hole may be formed adjacent the wedge-shaped opening in the bone.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 25, 2015
    Assignee: Arthrex, Inc.
    Inventors: Kelly Ammann, Vincent P. Novak, Robert Schneider, Ralph E. Burns, Annunziato Amendola
  • Patent number: 9101478
    Abstract: Systems and methods for providing deeper knee flexion capabilities, more physiologic load bearing and improved patellar tracking for knee prosthesis patients. In some instances, such systems and methods include a tibial component for replacing at least a portion of a proximal portion of a tibia. While the tibial component can include a variety of characteristics, in some cases, it includes a tibial articular surface, an undersurface, and a stem that extends from the undersurface. In some cases, this stem is configured to contact an inner surface of an anterior cortex of the tibia when the stem is inserted into the tibia and the undersurface of the tibial component is in contact with a cut surface of the tibia. Other implementations are also described.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: August 11, 2015
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Patent number: 9095453
    Abstract: A trial system for an implantable joint replacement includes a guide assembly having a baseplate and a guide plate, the guide plate rotatable relative to the base plate about a rotation axis extending through the guide plate and the baseplate while directly connected to the baseplate. An adjustment mechanism is actuable to selectively control the rotational juxtaposition of the guide plate relative to the baseplate. The rotation axis may be medially offset from the center of the guide assembly. A single instrument may be used to rotate the guide plate relative to the base plate and lock the plates in the selected juxtaposition. The guide plate provides in situ positionable cutting guidance for implantation of prosthetic joint components. The system may further include an articulating insert trial mounted on the guide assembly to determine preferred joint alignment and/or optimal positioning of the guide plate.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: August 4, 2015
    Inventors: Michael D. Ries, Mark J Mooradian
  • Publication number: 20150142123
    Abstract: A knee prosthesis including a knee component and an indexing boss. The knee component includes a first engagement portion. The indexing boss includes a first terminal end surface, a second terminal end surface, and a second engagement portion at the second terminal end surface. The first terminal end surface and the second terminal end surface are arranged along non-parallel planes. The first and the second engagement portions are configured to selectively couple together at a plurality of rotational orientations to attain a corresponding plurality of angular orientations of the indexing boss relative to the knee component due to the first and the second terminal end surfaces being arranged along non-parallel planes.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 21, 2015
    Inventor: Curt Collard
  • Publication number: 20150134069
    Abstract: The invention concerns a tibial prosthetic component comprising a plate (100) for forming a tibial plateau of a tibia (16), wherein a peripheral region of the plate (100) has a thickness of less than 3 mm. The invention also concerns a tibial prosthetic component having a keel of depth less than 9 mm. The invention also concerns a method of selecting a tibial prosthetic component comprising receiving measurements of at least one physical attribute of an individual into whom the tibial prosthetic component is to be implanted, selecting a thickness of a plate (100) and depth of keel of the tibial prosthetic component based on the measurements and providing a tibial prosthetic component comprising a plate (100) having the selected thickness and a keel having the selected depth.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 14, 2015
    Inventors: John Goodfellow, John O'Connor, Chris Dodd, David Murray
  • Publication number: 20150134070
    Abstract: Orthopaedic surgical instruments including a base trial adapted to be positioned on a proximal end of a patient's resected tibia, and a guide tower including a tower base adapted to be positioned on the base trial. A method of use is also described.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 14, 2015
    Inventors: David W. Waite, II, Scott M. Thomas, Duncan G. Young, Matthew S. Wallace, Duncan J. Beedall
  • Patent number: 9017414
    Abstract: Disclosed is a trial implant having a body and a tab. The body may include a recess and may be sized to closely approximate a permanent implant. The tab may be more durable than the body, and may be disposed within the body and wholly contained within the recess. Also disclosed is a method of performing a trialing procedure including providing a trial implant as described, providing a tool to attach to the tab, inserting the implant onto a resected joint, evaluating and extracting the implant. The same procedure may then be performed with a second implant. The method may further include a tool having an attachment portion that is substantially or wholly contained within the recess. A kit is disclosed including a plurality of trial implants of incrementally different shapes and sizes. The kit may further include a tool. Also disclosed is a method of making the described implant.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: April 28, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: John Jude Grecco, Troy Allen McMillen
  • Patent number: 9011444
    Abstract: Disclosed herein are systems and methods for shaping bone voids during revision procedures of total knee replacements. The systems disclosed herein generally include a cannulated reamer assembly, a reaming guide assembly, a guide tube assembly, a trial stem assembly, and an optional insertion/removal tool. Metaphyseal reconstruction devices can be used to fill the bone voids in conjunction with the systems and methods disclosed herein.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 21, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: Steven Primiano, Damon J. Servidio, Mark Mooradian, Jeffery Arnett
  • Patent number: 9005300
    Abstract: A tibial implant includes a baseplate having a proximally facing surface surrounded at least in part by a proximally extending wall. The wall has a ramp surface extending from the wall towards the baseplate proximally facing baseplate surface and a bore located distally of the ramp. A polyethylene bearing insert is mounted on the baseplate and has a distally facing surface engaging the proximally facing surface of the baseplate. The distally facing bearing insert surface has a recess and the insert has a side surface with a passageway extending from the recess through the insert side surface. A spring detent is mounted in the bearing insert recess and has a moveable pin biased outwardly of the bearing insert side surface and into the bore of the baseplate.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: April 14, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventor: Carlos E. Collazo
  • Patent number: 8998998
    Abstract: A method for treating arthritis of a joint includes identifying a bone lesion in a bone adjacent to the joint; and implanting in the bone a reinforcing member in or adjacent to the bone lesion. A kit for conducting the method includes: (a) at least one reinforcing member having a proximal face adapted to face the joint, a distal face adapted to face away from the joint, and a wedge-shaped edge adapted to pierce bone, wherein the at least one reinforcing member is planar and sterile; and (b) a container adapted to maintain the at least one reinforcing member sterile. Another kit includes: (a) a sterile fluid; (b) a syringe for injecting the fluid into a bone; (c) a curing agent adapted to cure the fluid to polymerize and/or cross-link; and (d) a container adapted to maintain the sterility of contents of the container.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 7, 2015
    Assignee: Zimmer Knee Creations, Inc.
    Inventors: Peter F. Sharkey, Charles F. Leinberry
  • Patent number: 8998996
    Abstract: A modular knee prosthesis system includes a femoral component having a stem and a sleeve. The system is modular, and provides the surgeon with the option of distally offsetting the joint line by controlling the relative axial positions of the stem and the sleeve. Alternative options include providing sleeves with tapered bores of different diameters, providing a shim to be placed between the sleeve and the stem and providing the stems as adapters having different diameters.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 7, 2015
    Assignee: Depuy (Ireland)
    Inventors: Peter J James, Richard E Jones, Benjamin J Sordelet, Timothy G Vendrely, Stephanie M Wainscott
  • Publication number: 20150088265
    Abstract: Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and/or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Applicant: SMITH & NEPHEW, INC.
    Inventors: Nathaniel Milton Lenz, Richard Michael Smith, Zachary Christopher Wilkinson, Brian William McKinnon, Abraham Biglari Salehi, Jonathan Kirk Nielsen, Michael D. Ries, Gerald J. Jerry
  • Publication number: 20150088264
    Abstract: Embodiments of the invention provide knee prostheses which more faithfully and closely replicate the function, anatomy and physiology of the normal human knee yielding a number of advantages. Among other things, such prostheses can provide an increased range of motion and function more normally particularly in extension, deep flexion and during normal gait. Knee prostheses according to various aspects of the invention recognize that during movement of the knee, particularly during flexion, the kinematics of the bones of the knee are a result of achieving equilibrium of the forces that cause motion of the knee. In addition, the shape of the articular surfaces acting in combination with forces imposed by various muscles, ligaments and tendons, determines the direction of the large contact forces.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 26, 2015
    Applicant: The General Hospital Corporation
    Inventors: Guoan Li, Harry E. Rubash, Kartik Mangudi Varadarajan
  • Publication number: 20150081029
    Abstract: Improved implants, systems, tools and related methods for bi-cruciate retaining joint treatment are disclosed, including patient-adapted implants, systems, tools, and methods.
    Type: Application
    Filed: April 6, 2013
    Publication date: March 19, 2015
    Inventors: Raymond A. Bojarski, Philipp Lang, John Slamin, Terrance Wong
  • Publication number: 20150081030
    Abstract: A tibial support structure includes a platform portion and a medullary portion that are monolithically formed as a single piece. The medullary and platform portions of the augment component are adapted to accommodate and mechanically attach to a tibial baseplate, and are individually shaped and sized to replace damaged bone stock both within the tibia, as well at the tibial proximal surface. The monolithic formation of the tibial support structure provides a strong and stable foundation for a tibial baseplate and facilitates restoration of the anatomic joint line, even where substantial resections of the proximal tibia have been made. The tibial support structure may be made of a bone-ingrowth material which facilitates preservation and rebuilding of the proximal tibia after implantation, while also preserving the restored joint line by allowing revision surgeries to be performed without removal of the tibial support structure.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Inventors: Ray Zubok, Jorge Montoya, Timothy A. Hoeman, John Chernosky, Keith A. Roby
  • Patent number: 8979936
    Abstract: An orthopedic implant includes a first portion including at least one feature modified to be patient-specific and match the anatomy of a specific patient from a three-dimensional digital image of a patient's joint using computer modeling. The orthopedic implant includes a non-custom inner bone-engaging surface including a plurality of planar surfaces configured for engagement with non-custom bone cuts.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: March 17, 2015
    Assignee: Biomet Manufacturing, LLC
    Inventors: John R. White, Robert Metzger, Keith R. Berend
  • Publication number: 20150066150
    Abstract: Methods are disclosed for designing a tibial implant to minimize cortical impingement of a keel or other fixation structure when the tibial implant is implanted in the tibia bone. The design of the keel or other fixation structure on the tibial baseplate can be based on determining a common area between defined cancellous regions of at least two tibia bones. Methods are disclosed for designing a femoral component having a stem extension such that the stem can be sufficiently placed in the diaphysis of the femur when the femoral component is implanted. The method includes determining a canal axis in a femur that creates adequate engagement between a reamer and the diaphysis of the femur.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Yifei Dai, Christine Schaerer, Dwight Todd, Jeffrey E. Bischoff, Adam D. Henderson
  • Patent number: 8968412
    Abstract: An orthopaedic surgical instrument system that includes an orthopaedic surgical instrument adapted to be positioned on a proximal end of a patient's tibia, and a tibial bearing trial assembly configured to be coupled to the orthopaedic surgical instrument. The tibial bearing trial assembly includes a plurality of tibial bearing surface trial components and at least one shim.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 3, 2015
    Assignee: DePuy (Ireland)
    Inventors: Thomas E. Wogoman, Jon M. Edwards, Duncan G. Young, Liam T. Dower, Rusty T. Meier, David W. Waite, II, Rebecca L. Chaney, Michael J. Rock, Matthew S. Wallace, Scott M. Thomas
  • Patent number: 8968413
    Abstract: A tibial orthopaedic prosthesis assembly for use during performance of a knee replacement procedure includes one or more tibial augments configured to be coupled to a tibial tray. Each tibial augment includes an exterior side surface of varying angulation relative to a top surface of the tibial augment.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 3, 2015
    Assignee: DePuy (Ireland)
    Inventors: Michael A. Cook, Stephanie M. Wainscott, Tyler S. Hathaway, Joseph G. Wyss
  • Publication number: 20150057760
    Abstract: A tibial tuberosity advancement implant and method includes a spacer body made of biocompatible, biodegradable material and having a main section with at least one bony growth orifice therethrough and at least one fin extending from the main section by at least one connector. A metal clip is engageable with of the spacer body main section and includes spaced screw holes for securing the spacer body to the advanced tibial tuberosity and the tibia when the implant is placed in the space between the advanced tibial tuberosity and the tibia.
    Type: Application
    Filed: November 4, 2014
    Publication date: February 26, 2015
    Inventors: Andrew J. Kazanovicz, David J. Anderson, III
  • Publication number: 20150057759
    Abstract: A method and apparatus for correcting varus deformity comprises cutting a horizontal slot in the upper medial portion of the tibia. The slot is opened by the application of external force and a wedge is inserted to maintain the opening. The opening of the slot corrects the position and orientation of the deformed medial plateau.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 26, 2015
    Applicant: New York University
    Inventor: Peter Stanley Walker
  • Publication number: 20150057758
    Abstract: A dynamic trialing method generally allows a surgeon to perform a preliminary bone resection on the distal femur according to a curved or planar resection profile. With the curved resection profile, the distal-posterior femoral condyles may act as a femoral trial component after the preliminary bone resection. This may eliminate the need for a separate femoral trial component, reducing the cost and complexity of surgery. With the planar resection profile, shims or skid-like inserts that correlate to the distal-posterior condyles of the final insert may be attached to the distal femur after the preliminary bone resection to facilitate intraoperative trialing. The method and related components may also provide the ability of a surgeon to perform iterative intraoperative kinematic analysis and gap balancing, providing the surgeon the ability to perform necessary ligament and/or other soft tissue releases and fine tune the final implant positions based on data acquired during the surgery.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 26, 2015
    Applicant: Stryker Corporation
    Inventors: Stuart L. Axelson, JR., Emily Hampp, John R. Fossez
  • Patent number: 8961614
    Abstract: A method is provided for delivering an implant for replacing a portion of an articular surface. The method may include forming a socket in an articulating feature that is capable of moving relative to the articular surface. An implant may be placed in the socket and the articulating feature may be moved relative to the articular surface to generally align the socket with an implant site formed in the articular surface. The implant may be transferred from the socket into the implant site.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: February 24, 2015
    Assignee: Arthrosurface, Inc.
    Inventors: Steven W. Ek, Anthony Miniaci
  • Patent number: 8951301
    Abstract: A method of assembling a surgical instrument includes selecting a tibial bearing surface trial component, orienting a shim relative to the tibial bearing surface trial component, and securing the shim to the tibial bearing surface trial component.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: February 10, 2015
    Assignee: DePuy (Ireland)
    Inventors: Thomas E. Wogoman, Jon M. Edwards, Duncan G. Young, Liam T. Dower, Rusty T. Meier, David W. Waite, II, Rebecca L. Chaney, Michael J. Rock, Matthew S. Wallace, Scott M. Thomas, Robert S. Gorab
  • Patent number: 8945231
    Abstract: A composite trial prosthesis comprises a first component (2) and a shim (4). The first component (2) has a first surface (8) corresponding to a surface of a prosthetic component and a reverse surface (10). The shim (4) is arranged to couple to the reverse surface (10). The first component (2) further comprises a first marking (24) which is arranged to be visible when the first component (2) is coupled directly to a bone or a further prosthetic component. Part of the shim (26) is arranged to obscure the first marking (24) when the shim (4) is coupled to the reverse surface (10), the shim (4) further comprising a second marking (28) which is visible when the shim (4) is coupled to a bone or a further prosthetic component. A set of composite trial prostheses and a method of selecting a required surgical prosthesis are also disclosed.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: February 3, 2015
    Assignee: Depuy (Ireland)
    Inventor: Duncan Young
  • Publication number: 20150032215
    Abstract: Articular repair implants, implant components, systems, methods, and tools are disclosed. Various embodiments provide improved features for knee joint articular repair systems designed for posterior stabilization, including deep-dish configurations, and box, cam, and/or post features. Additionally, various embodiments include patient-adapted (e.g., patient-specific and/or patient-engineered) features.
    Type: Application
    Filed: March 1, 2013
    Publication date: January 29, 2015
    Inventors: John Slamin, Raymond A. Bojarski, Wolfgang Fitz, Raj K. Sinha, Daniel Steines, Thomas Minas, Philipp Lang
  • Publication number: 20150032217
    Abstract: Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 29, 2015
    Inventors: Raymond A. Bojarski, Philipp Lang, Nam T. Chao, Wolfgang Fitz, John Slamin, Daniel Steines, Thomas Minas
  • Patent number: 8936648
    Abstract: A prosthesis for replacing a knee joint between a femur and a tibia can include a femoral component, a tibial component, a bearing and a yoke assembly. The yoke assembly can have a yoke disposed between the bearing and the femoral component and an axle having an axle axis. The axle can hingedly couple the yoke with the femoral component. Rotation of the femoral component about a rotation axis that is perpendicular to the axle axis causes concurrent rotation of the yoke about the rotation axis.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 20, 2015
    Assignee: Biomet Manufacturing, LLC
    Inventors: Curt Collard, Michael John Collins, Robert Metzger, Brian M. May, Larabeth G. Ryan
  • Patent number: 8932364
    Abstract: Disclosed herein are systems and methods for filling bone voids which may be present at the time of surgery. The systems disclosed herein generally include a baseplate component, a spacer component, and void filler component. The spacer component is generally assembled to the baseplate component with a taper or press-fit, for example, in one of a plurality of selected axial positions. The void filler component is then generally assembled to the spacer component in one of a plurality of selected axial positions. The void filler component preferably has an outer surface with portions having varying diameters such that the outer surface thereof can be received within a canal of a bone and contact the bone forming the canal at different locations in order to aid in stabilizing the assembled components in the canal.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: January 13, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: Mark Mooradian, Jeffery Arnett, Joshua A. Butters
  • Publication number: 20150012106
    Abstract: Orthopaedic assemblies including a tibial component and one of a fixed tibial insert or a rotatable tibial insert. The assemblies may include structure to prevent undesired movement between the tibial component and insert. For example, a retaining tab may be provided on the tibial component that couples to a tab opening on a surface of the tibial insert (either the fixed or rotatable insert). When assembled, the retaining tab may be covered to avoid possible irritation to the patient's surrounding anatomy. The fixed tibial insert may be provided with a tab opening that provides a minimal amount clearance with the retaining tab to help prevent rotation of the fixed tibial insert. The rotatable tibial insert may be provided with a tab opening with more clearance with the retaining tab to allow at least some rotation with the tibial component.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 8, 2015
    Applicant: Smith & Nephew, Inc.
    Inventors: Roger Ryan Dees, JR., Paul Charles Crabtree, Jr.
  • Publication number: 20150005889
    Abstract: Surgical methods and tibial implants for accommodating the anterior cruciate ligament during unicompartmental or bi-unicompartmental knee arthroplasty procedures.
    Type: Application
    Filed: September 16, 2014
    Publication date: January 1, 2015
    Inventors: Robert Hodorek, Herve Windisch, Marc Muenchinger, Thomas Trachsler
  • Publication number: 20150005890
    Abstract: An orthopaedic knee prosthesis includes a tibial bearing component with surface features which operate to protect adjacent soft tissues of the natural knee throughout a wide range of flexion. More particularly, the tibial bearing component provides an anterior relief space disposed between the dished lateral and medial articular compartments, in which the relief space is convex as viewed from a sagittal perspective across the medial/lateral extent of the relief space.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 1, 2015
    Inventors: Raymond C. Parisi, Abraham P. Habegger, Peter S. Walker, Jeff Blaylock, Kathleen Macke
  • Publication number: 20140371865
    Abstract: Trial joint inserts have posts at different positions relative to the base. During joint replacement surgery, a surgeon can test different positions for a post using a trial insert, identify a suitable position for the post, and then select a permanent insert with a post in the desired position. The devices and methods in this application allow a surgeon to provide an individualized joint replacement for a patient. Joint inserts may be configured so the post moves relative to the base. The post may be adjustably positionable, may lock in place, or may be actuated by a resistance member such as a spring.
    Type: Application
    Filed: December 6, 2012
    Publication date: December 18, 2014
    Inventors: Jason S. Jordan, Theodore P. Firestone
  • Publication number: 20140371866
    Abstract: Various embodiments described herein can facilitate the design of patient-adapted (e.g., patient-specific or patient-engineered) tibial implants. Furthermore, various embodiments described herein can include implant components having one or more patient-adapted features and one or more standard, that is, not patient-adapted (e.g., off-the-shelf), features incorporated into the design of the tibial implant components, including the sizes of the tibial tray, the locking mechanism, the tibial tray cavities, and/or the tibial inserts. For example, in various embodiments, the size of the tibial tray may be designed as patient-adapted by incorporating patient-adapted measurements into the perimeter of the tibial component.
    Type: Application
    Filed: February 7, 2013
    Publication date: December 18, 2014
    Inventors: Nam T. Chao, John Slamin, Philipp Lang
  • Patent number: 8911502
    Abstract: Embodiments of the invention provide knee prostheses which more faithfully and closely replicate the function, anatomy and physiology of the normal human knee yielding a number of advantages. Among other things, such prostheses can provide an increased range of motion and function more normally particularly in extension, deep flexion and during normal gait. Knee prostheses according to various aspects of the invention recognize that during movement of the knee, particularly during flexion, the kinematics of the bones of the knee are a result of achieving equilibrium of the forces that cause motion of the knee. In addition, the shape of the articular surfaces acting in combination with forces imposed by various muscles, ligaments and tendons, determines the direction of the large contact forces.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: December 16, 2014
    Assignee: The General Hospital Corporation
    Inventors: Guoan Li, Harry E. Rubash, Kartik Mangudi Varadarajan
  • Patent number: 8911501
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: December 16, 2014
    Assignee: Mako Surgical Corp.
    Inventors: Ronald R. Irwin, Jason Karl Otto, Ali Zafar Abbasi, Mark Ellsworth Nadzadi
  • Patent number: 8906106
    Abstract: The invention concerns a tibial prosthetic component comprising a plate (100) for forming a tibial plateau of a tibia (16), wherein a peripheral region of the plate (100) has a thickness of less than 3 mm. The invention also concerns a tibial prosthetic component having a keel of depth less than 9 mm. The invention also concerns a method of selecting a tibial prosthetic component comprising receiving measurements of at least one physical attribute of an individual into whom the tibial prosthetic component is to be implanted, selecting a thickness of a plate (100) and depth of keel of the tibial prosthetic component based on the measurements and providing a tibial prosthetic component comprising a plate (100) having the selected thickness and a keel having the selected depth.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: December 9, 2014
    Inventors: John O'Connor, Chris Dodd, David Murray, Colin Hunsley
  • Patent number: 8906104
    Abstract: A method of assembling a knee joint prosthesis for replacing a portion of a knee joint. The method includes rotatably coupling a post to an extension portion of an insert extending from a bearing member, and coupling a femoral component for articulation on the bearing member.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: December 9, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventor: Nathan E. Belcher
  • Publication number: 20140358242
    Abstract: An implant augment (12) includes an augment portion (24) and a fixation portion (28) attached to the augment portion (24). The augment portion (24) has a first surface (40) for contacting a cut surface of an articular end of a bone and a second surface (42) for contacting an implant. The fixation portion (28) extends from the augment portion (24) to contact a cortical surface of a shaft of the bone.
    Type: Application
    Filed: December 13, 2012
    Publication date: December 4, 2014
    Inventor: Angela Black Mines
  • Patent number: 8900316
    Abstract: Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and/or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 2, 2014
    Assignee: Smith & Nephew, Inc.
    Inventors: Nathaniel M. Lenz, Richard Michael Smith, Zachary Christopher Wilkinson, Brian W. McKinnon, Abraham B. Salehi, Jonathan Kirk Nielsen, Michael D. Ries, Gerald J. Jerry
  • Patent number: 8900317
    Abstract: A tibial support structure includes a platform portion and a medullary portion that are monolithically formed as a single piece. The medullary and platform portions of the augment component are adapted to accommodate and mechanically attach to a tibial baseplate, and are individually shaped and sized to replace damaged bone stock both within the tibia, as well at the tibial proximal surface. The monolithic formation of the tibial support structure provides a strong and stable foundation for a tibial baseplate and facilitates restoration of the anatomic joint line, even where substantial resections of the proximal tibia have been made. The tibial support structure may be made of a bone-ingrowth material which facilitates preservation and rebuilding of the proximal tibia after implantation, while also preserving the restored joint line by allowing revision surgeries to be performed without removal of the tibial support structure.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: December 2, 2014
    Assignee: Zimmer, Inc.
    Inventors: Ray Zubok, Jorge Montoya, Timothy A. Hoeman, John Chernosky, Keith A. Roby
  • Publication number: 20140343681
    Abstract: An implant providing for both short and long term stability and fixation is disclosed. The implant includes a plurality of projections extending from a bone contacting surface, and a porous material covering at least portions of the surface and projections. The orientation of the projections and the porous material provide for the stability and fixation. Methods of forming and utilizing the implant are also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: November 20, 2014
    Applicant: MAKO SURGICAL CORP.
    Inventors: Robert Craig Cohen, Philip Harris Frank
  • Publication number: 20140336773
    Abstract: Systems and methods for providing deeper knee flexion capabilities, more physiologic load bearing and improved patellar tracking for knee prosthesis patients. Such systems and methods include (i) adding more articular surface to the antero-proximal posterior condyles of a femoral component, including methods to achieve that result, (ii) modifications to the internal geometry of the femoral component and the associated femoral bone cuts with methods of implantation, (iii) asymmetrical tibial components that have an unique articular surface that allows for deeper knee flexion than has previously been available, (iv) asymmetrical femoral condyles that result in more physiologic loading of the joint and improved patellar tracking and (v) modifying an articulation surface of the tibial component to include an articulation feature whereby the articulation pathway of the femoral component is directed or guided by articulation feature.
    Type: Application
    Filed: May 12, 2014
    Publication date: November 13, 2014
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Patent number: 8882848
    Abstract: A method for treating arthritis of a joint includes identifying a bone lesion in a bone adjacent to the joint; and implanting in the bone a reinforcing member in or adjacent to the bone lesion. A kit for conducting the method includes: (a) at least one reinforcing member having a proximal face adapted to face the joint, a distal face adapted to face away from the joint, and a wedge-shaped edge adapted to pierce bone, wherein the at least one reinforcing member is planar and sterile; and (b) a container adapted to maintain the at least one reinforcing member sterile. Another kit includes: (a) a sterile fluid; (b) a syringe for injecting the fluid into a bone; (c) a curing agent adapted to cure the fluid to polymerize and/or cross-link; and (d) a container adapted to maintain the sterility of contents of the container.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 11, 2014
    Assignee: Zimmer Knee Creations, Inc.
    Inventors: Peter F. Sharkey, Charles F. Leinberry
  • Patent number: 8882847
    Abstract: Disclosed herein are methods and devices for repairing articular surfaces in a knee joint. The articular surface repairs are customizable or highly selectable for each patient and geared toward providing optimal fit and function. Kits are also provided to enable customized repairs to be performed.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: November 11, 2014
    Assignee: ConforMIS, Inc.
    Inventors: Albert G. Burdulis, Jr., Wolfgang Fitz, Philipp Lang, Daniel Steines, Konstantinos Tsougarakis, Rene Vargas-Voracek, Hacene Bouadi, David Miller
  • Publication number: 20140324178
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Inventors: Ronald R. Irwin, Jason Karl Otto, Ali Zafar Abbasi, Mark Ellsworth Nadzadi
  • Publication number: 20140324179
    Abstract: Systems, devices, and methods are described for providing orthopedic knee inserts. The orthopedic knee inserts include a surface portion having a lip configured to couple with a mating member of a tibial component, where the lip has recesses that define non-continuous contact regions between the lip and the mating member of the tibial component. Alternatively, or additionally, in certain embodiments the mating member includes a shelf for mating with an insert, the mating member having a plurality of splines disposed along the shelf that form non-continuous contact regions between the mating member and the insert.
    Type: Application
    Filed: December 19, 2012
    Publication date: October 30, 2014
    Inventors: Abraham B. Salehi, Brian W. McKinnon