Femoral Bone Patents (Class 623/20.35)
  • Patent number: 10363052
    Abstract: A system for performing a total joint arthroplasty procedure on a patient's damaged bone region. A CT image or other suitable image is formed of the damaged bone surfaces, and location coordinate values (xn,yn,zn) are determined for a selected sequence of bone surface locations using the CT image data. A mathematical model z=f(x,y) of a surface that accurately matches the bone surface coordinates at the selected bone slice locations, or matches surface normal vector components at selected bone surface locations, is determined. The model provides a production file from which a cutting jig and an implant device (optional), each patient-specific and having controllable alignment, are fabricated for the damaged bone by automated processing.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: July 30, 2019
    Assignee: Howmedica Osteonics Corporation
    Inventors: Ilwhan Park, Lacerial Pearson, Stephen M. Samuel
  • Patent number: 10350076
    Abstract: A unicondylar resurfacing femoral component including a metallic base member and a polymeric articulation member. The metallic base member includes a main body and a retention member extending from the main body configured to be secured within a condyle of a femur. The polymeric articulation member is coupled to the main body of the metallic base member and includes an articulation surface configured to articulate directly against a planar surface of a metallic tibial component.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 16, 2019
    Assignee: Biomet Manufacturing, LLC
    Inventors: Russell Lloyd, Brian M. May
  • Patent number: 10245047
    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.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 2, 2019
    Assignee: Howmedica Osteonics Corporation
    Inventors: Ilwhan Park, Michael Koehle, Lorenzo R. Deveza
  • Patent number: 10172713
    Abstract: A method of manufacturing a patient-customized tibial element for use in artificial knee joint surgery. A tibial element data table regarding sizes of proximal tibial prostheses is formed. Standard molds able to cover the tibial element data table are manufactured. A standard mold is selected from the standard molds in order to manufacture a patient-customized proximal tibial prosthesis. A proximal tibial prosthesis fitting a patient is formed using the selected standard mold.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: January 8, 2019
    Assignee: Corentec Co., LTD.
    Inventors: Oui-Sik Yoo, Jae-Won Kim
  • Patent number: 10159498
    Abstract: An orthopedic device includes a femoral implant having a non-custom internal bone engagement surface. The femoral implant includes at least nine parameters adjusted preoperatively to correspond to a specific patient. The parameters can include patient-specific lengths, such as, for example, medial and lateral condyle widths and notch height, and patient-specific medial and lateral angles.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: December 25, 2018
    Assignee: Biomet Manufacturing, LLC
    Inventors: Brian A. Uthgenannt, Robert Metzger, Nathan E. Belcher, Joshua B. Catanzarite
  • Patent number: 10052206
    Abstract: A method of generating a patient specific prosthetic implant is described, which includes: generating a three dimensional electronic representation of a human anatomical feature of a unique patient; identifying one or more representative surface curvature features on the three dimensional electronic representation; and associating the three dimensional electronic representation with a virtual implant template of the human anatomical feature selected from a database of virtual implant templates, and comparing fit of the identified representative surface curvature features of the three dimensional electronic representation with corresponding surface curvature features of the virtual implant template. The virtual implant template is selected to have the most similar corresponding surface curvature features.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: August 21, 2018
    Assignee: ZIMMER INC.
    Inventor: Mohamed Rashwan Mahfouz
  • Patent number: 10039558
    Abstract: A method and system for performing a total joint arthroplasty procedure on a patient's damaged bone region. A CT image or other suitable image is formed of the damaged bone surfaces, and location coordinate values (xn,yn,zn) are determined for a selected sequence of bone surface locations using the CT image data. A mathematical model z=f(x,y) of a surface that accurately matches the bone surface coordinates at the selected bone splice locations, or matches surface normal vector components at selected bone surface locations, is determined. The model provides a production file from which a cutting jig and an implant device (optional), each patient-specific and having controllable alignment, are fabricated for the damaged bone by automated processing.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: August 7, 2018
    Assignee: Howmedica Osteonics Corporation
    Inventors: Ilwhan Park, Lacerial Pearson, Stephen M. Samuel
  • Patent number: 9867708
    Abstract: A prosthetic femoral component (10) for an orthopedic prosthesis has a canted patellar groove adapted for optimal patella/component interaction, with the component configured to have a medial or lateral cant depending upon the method of implantation. The femoral component defines a distal “component transverse plane,” which is a plane tangent to the distal-most points of the component condyles (12, 14). In a “mechanical” implantation, the component transverse plane is substantially normal to the mechanical femoral axis of the femur after the component has been implanted. Where the femoral component is configured to be “mechanically oriented” in this manner, the component has a medially canted patellar groove. On the other hand, an “anatomic” implantation is one in which, after the component has been implanted, the component transverse plane is substantially parallel to an “anatomic” transverse plane.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: January 16, 2018
    Assignee: ZIMMER GMBH
    Inventors: Cosimo Donno, Adam D. Henderson
  • Patent number: 9839522
    Abstract: A femoral prosthetic component comprises a pair of condyles having an intercondylar notch interposed substantially therebetween. Each of the pair of condyles comprises an edge that borders the intercondylar notch. At least one of the pair of condyles comprises a condylar notch disposed within the respective edge of the at least one of the pair of condyles.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: December 12, 2017
    Assignee: Mako Surgical Corp.
    Inventors: Kevin Bechtold, Ali Zafar Abbasi, Amit Mistry, Mark Ellsworth Nadzadi, Jason Karl Otto
  • Patent number: 9795487
    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 knee prosthesis that includes a femoral component for replacing at least a portion of a distal end of a femur. While the femoral component can include any feature, in some cases, it includes a condylar surface configured to articulate with an articular surface of a tibia. In some cases, the femoral component also includes a proximal extension that extends from a proximal, posterior portion of the condylar surface. In such cases, the proximal extension provides the femoral component with a concave articulation surface that is configured to articulate against a portion of the tibia. Other implementations are also described.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: October 24, 2017
    Inventors: Kent M. Samuelson, Conner E. Samuelson
  • Patent number: 9681956
    Abstract: Various embodiments of methods for obtaining kinematic information regarding a joint, including information regarding the joint in a weight-bearing position, are disclosed, as well as methods of designing implants, instruments, and surgical repair systems based on the kinematic information.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: June 20, 2017
    Assignee: ConforMIS, Inc.
    Inventors: Ghaith Al Hares, Klaus Radermacher
  • Patent number: 9672758
    Abstract: A kit for replicating an implantable prosthetic devices includes a model implant, a geometric tool, and an insert. The model implant may include a first curved surface, and the first curved surface may include a first cutout formed. The geometric tool may include a second curved surface having a second cutout. The geometric configuration of the second cutout may be substantially identical to the geometric configuration of the first cutout of the model implant. The insert may be configured to be engaged with both the first cutout and the second cutout.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 6, 2017
    Assignee: Howmedica Osteonics Corp.
    Inventor: Sujit Sivadas
  • Patent number: 9649195
    Abstract: A femoral prosthetic component comprises a pair of condyles having an intercondylar notch interposed substantially therebetween. Each of the pair of condyles comprises an edge that borders the intercondylar notch. At least one of the pair of condyles comprises a condylar notch disposed within the respective edge of the at least one of the pair of condyles.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 16, 2017
    Assignee: Mako Surgical Corp.
    Inventors: Kevin Bechtold, Ali Zafar Abbasi, Amit Mistry, Mark Ellsworth Nadzadi, Jason Karl Otto
  • Patent number: 9381088
    Abstract: Knee prosthesis includes a femoral component adapted to fit on a distal end of the femur and a tibial insert component. The femoral component includes a measured anterior/posterior dimension defined by the posterior condyle surface and the interior surface of the anterior flange and a distal peg provided on a distal bone facing surface of each of the lateral and medial condylar structures, wherein the distal pegs are positioned at a midpoint of the measured anterior/posterior dimension. The implant system provides two distinct sizing segments and the tibial insert has a medial tibial aspect ratio of 0.74 and a lateral tibial aspect ratio of 0.65 to 0.68 for all sizes.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 5, 2016
    Assignee: MicroPort Orthopedics Holdings Inc.
    Inventors: William J. Maloney, J. David Blaha, C. Lowry Barnes, John M. Green, David R. Tuttle
  • Patent number: 9375317
    Abstract: A knee arthrodesis implant has a femur nail and a tibia nail. A connecting module has two longitudinally separated half shells that when connected form a passage. One end of the connecting module is coupled to a femur nail neck and the other end is coupled to a tibia nail neck. The half shells have a plurality of corresponding recesses extending perpendicularly to the passage. Each recess receives a tensioning screw, and tightening the tensioning screws couples the femur and tibia nail necks to the connecting module by holding the femur and tibia nail necks within the passage by frictional contact. Each of the two half shells is angled along its length, an angle of one of the half shells corresponding to an angle of the other of the half shells, allowing the tibia nail and femur nail to extend from the passage at an angle from one another.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: June 28, 2016
    Assignee: Merete Medical GmbH
    Inventors: Emmanuel Anapliotis, Curt Kranz, Martin Hilse, Guenter Lob
  • Patent number: 9173744
    Abstract: A prosthetic femoral component (10) for an orthopaedic prosthesis has a canted patellar groove adapted for optimal patella/component interaction, with the component configured to have a medial or lateral cant depending upon the method of implantation. The femoral component defines a distal “component transverse plane,” which is a plane tangent to the distal-most points of the component condyles (12,14). In a “mechanical” implantation, the component transverse plane is substantially normal to the mechanical femoral axis of the femur after the component has been implanted. Where the femoral component is configured to be “mechanically oriented” in this manner, the component has a medially canted patellar groove. On the other hand, an “anatomic” implantation is one in which, after the component has been implanted, the component transverse plane is substantially parallel to an “anatomic” transverse plane.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 3, 2015
    Assignee: Zimmer GMBH
    Inventors: Cosimo Donno, Adam D. Henderson
  • Patent number: 9060868
    Abstract: An orthopaedic knee prosthesis includes a femoral component which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: June 23, 2015
    Assignee: Zimmer, Inc.
    Inventors: Raymond C. Parisi, Nick Drury, Charles A. Baldridge
  • 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
  • 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: 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
  • Patent number: 8998911
    Abstract: Methods and apparatus for performing knee arthroplasty, including, but not limited to, bicruciate retaining knee arthroplasty, are described herein. Methods and apparatus for preparing a distal femur for a femoral implant as well as methods and apparatus for preparing a proximal tibia for a tibial implant are described. These methods and apparatus, in at least some embodiments and uses, facilitate decreasing the complexity of knee arthroplasty procedures such as bicruciate retaining procedures, while maintaining, if not improving on, the safety, accuracy and/or effectiveness of such procedures.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 7, 2015
    Assignee: Smith & Nephew, Inc.
    Inventors: Zachary Christopher Wilkinson, Brian W. McKinnon, David A. Drucker, Michael D. Ries
  • Publication number: 20150081031
    Abstract: An orthopaedic knee prosthesis includes a femoral component which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 19, 2015
    Inventors: Raymond C. Parisi, Nick Drury, Charles A. Baldridge
  • Patent number: 8974539
    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: Grant
    Filed: November 11, 2011
    Date of Patent: March 10, 2015
    Assignee: ConforMIS, Inc.
    Inventors: Raymond A. Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel Steines
  • 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
  • Publication number: 20150045901
    Abstract: Various embodiments of femoral trochlea prostheses useable in a knee joint. The knee joint includes a patella and a distal femur with a femoral trochlea, or patello-femoral groove. In one embodiment, a femoral trochlea prosthesis includes a distal tail. In another embodiment, a femoral trochlea prosthesis includes a wing or extension portion. In yet another embodiment, a set of femoral trochlea prostheses includes a plurality of prostheses having differing thicknesses. In still another embodiment, a femoral trochlea prosthesis includes a porous medium on various portions of the prosthesis.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Jeffrey D. Brown, Adam M. Griner, Robert Hodorek, Raymond C. Parisi, Brian E. Vanskyock, Justin J. May, James C. Harris
  • Publication number: 20150032219
    Abstract: A trochlear ridge prosthesis includes a curved section, the curved section having a span (RS) and a height (RH) above the span, the ratio of the height to the span being in the range 0.15 to 0.35, and a tail extending from a proximal end of the curved section.
    Type: Application
    Filed: February 21, 2013
    Publication date: January 29, 2015
    Applicant: ORTHOMED (UK) LIMITED
    Inventor: Tamas Hargittai
  • Publication number: 20150032218
    Abstract: Systems, devices, and methods are described for providing orthopedic implants that reduces the negative effects of stress shielding on surrounding bone structure. The orthopedic implants are comprised of two portions, a shell portion that forms an articulation interfaces and an intermediate portion that forms a bone interface. The shell portion is designed to reduce absorption of Carticulation forces and evenly distribute incident forces to the intermediate portion. The intermediate portion is designed to form a strong interface with native bone and transmit forces from the shell into the bone.
    Type: Application
    Filed: January 7, 2013
    Publication date: January 29, 2015
    Inventor: Ryan L. Landon
  • Publication number: 20150025644
    Abstract: A knee prosthesis has a femoral component with a medial condyle defining a constant bearing spacing relative to a central sagittal component plane SP, and a lateral condyle defining divergent bearing spacing from the central sagittal component plane along an extension-to-flexion path. High congruence between the medial articulation surfaces creates a pivot point for external rotation at the medial contact area, while lower congruence in the lateral articulation surfaces allows the lateral femoral condyle to track anteriorly and posteriorly during flexion. The amount of lateral condyle bearing spacing divergence is calculated to produce a substantially linear anteroposterior motion profile of the lateral femoral condyle upon the lateral tibia articular surface throughout a wide range of flexion.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Inventors: Marco A.H. Heggendorn, Matthias Schäpper, Roger Scherrer
  • Publication number: 20150025646
    Abstract: A femoral component for a prosthetic knee joint has a medial and a lateral condylar portion each having a bearing surface and a bone contacting surface. The medial and lateral condylar portions defining an opening therebetween. The opening is at least partially open to a cavity surrounded by a wall extending proximally from the bone contacting surface of the medial and lateral condylar portions. The wall having an inner surface defining a perimeter of the cavity and medially, laterally and posteriorly facing outer surface portions. The medially laterally and posteriorly facing surface portions being arcuate in shape.
    Type: Application
    Filed: June 12, 2014
    Publication date: January 22, 2015
    Inventors: Scott Logan, An Chen
  • Patent number: 8932365
    Abstract: An orthopaedic knee prosthesis includes a femoral component which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 13, 2015
    Assignee: Zimmer, Inc.
    Inventors: Raymond C. Parisi, Nick Drury, Charles A. Baldridge
  • 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
  • Patent number: 8926706
    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: Grant
    Filed: November 11, 2011
    Date of Patent: January 6, 2015
    Assignee: ConforMIS, Inc.
    Inventors: Raymond A. Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel Steines
  • Publication number: 20140379091
    Abstract: An implantable orthopaedic knee prosthesis includes a component that is configured to be coupled to a surgically-prepared bone. A fixation side of the component includes a fixation surface that has an angled cement pocket formed therein.
    Type: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Christel M. Wagner, Joseph G. Wyss, David S. Barrett
  • Patent number: 8906107
    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: Grant
    Filed: November 11, 2011
    Date of Patent: December 9, 2014
    Assignee: ConforMIS, Inc.
    Inventors: Raymond A. Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel Steines
  • 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
  • Publication number: 20140350687
    Abstract: Systems and methods for providing deeper knee flexion capabilities. In some instances, such systems and methods include a femoral knee replacement component that includes an articular surface, a first interior surface, and a second interior surface, wherein the first and second interior surfaces run substantially parallel to each other. In some cases, the articular surface includes an anterior condylar extension that is configured to replace an anterior articular cartilage of a femur such that the anterior extension is configured to terminate adjacent to a proximal limit of the anterior articular cartilage of the femur. Other implementations are also discussed.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 27, 2014
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Publication number: 20140336774
    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: Application
    Filed: April 7, 2014
    Publication date: November 13, 2014
    Applicant: ConforMIS, Inc.
    Inventors: Wolfgang Fitz, Philipp Lang, Daniel Steines, Konstantinos Tsougarakis, Rene Vargas-Voracek
  • Publication number: 20140316526
    Abstract: This disclosure is directed to a resilient interpositional arthroplasty implant for application into a joint to pad cartilage defects, cushion, and replace or restore the articular surface, which may preserve joint integrity, reduce pain and improve function. The implant may endure variable joint compressive and shear forces and cyclic loads. The implant may repair, reconstruct, and regenerate joint anatomy, and thereby improve upon joint replacement alternatives. The walls of this invention may capture, distribute and hold living cells until aggregation and hyaline cartilage regrowth occurs. The implant may be deployed into debrided joint spaces, molding and conforming to surrounding structures with sufficient stability so as to enable immediate limb use after outpatient surgery. Appendages of the implant may repair or reconstruct tendons or ligaments, and menisci by interpositional inflatable or compliant polymer arthroplasties that promote anatomic joint motion.
    Type: Application
    Filed: August 30, 2012
    Publication date: October 23, 2014
    Inventor: R. Thomas Grotz
  • Publication number: 20140316528
    Abstract: A femoral prosthetic component comprises a pair of condyles having an intercondylar notch interposed substantially therebetween. Each of the pair of condyles comprises an edge that borders the intercondylar notch. At least one of the pair of condyles comprises a condylar notch disposed within the respective edge of the at least one of the pair of condyles.
    Type: Application
    Filed: July 2, 2014
    Publication date: October 23, 2014
    Inventors: Kevin Bechtold, Ali Zafar Abbasi, Amit Mistry, Mark Ellsworth Nadzadi, Jason Karl Otto
  • Publication number: 20140296993
    Abstract: Systems and methods for providing deeper knee flexion capabilities. In some instances, such systems and methods include a knee prosthesis that includes a femoral component for replacing at least a portion of a distal end of a femur. In some cases, the femoral component has a posterior condyle that is configured to articulate against a tibial articular surface. In such cases, an articular surface at a proximal portion of the posterior condyle is sized and shaped to extend at least half of an antero-posterior distance between a most posterior portion of the posterior condyle and a plane that is a continuation of a distal one fourth to one third of a posterior cortex of a femoral shaft of the femur. Other implementations are also discussed.
    Type: Application
    Filed: May 5, 2014
    Publication date: October 2, 2014
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Publication number: 20140296994
    Abstract: Systems and methods for providing deeper knee flexion capabilities. In some instances, such systems and methods include an asymmetrical femoral component that includes a femoral prosthesis that is configured to attach to a distal portion of a femur. In some such instances, the prosthesis includes a medial condyle and a lateral condyle, wherein a medial-lateral width of an articulation surface of the lateral condyle is approximately 75% or less of a medial-lateral width of an articulation surface of the medial condyle. Other implementations are also discussed.
    Type: Application
    Filed: May 12, 2014
    Publication date: October 2, 2014
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Patent number: 8845746
    Abstract: An implantable orthopaedic knee prosthesis includes a component that is configured to be coupled to a surgically-prepared bone. A fixation side of the component includes a fixation surface that has an angled cement pocket formed therein.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: September 30, 2014
    Assignee: DePuy (Ireland)
    Inventors: Christel M. Wagner, Joseph G. Wyss, David S. Barrett
  • Publication number: 20140277536
    Abstract: A knee prosthesis for use during performance of a knee replacement procedure includes a plurality of stem components in a range of various sizes, a plurality of femoral components in a range of various sizes, and a plurality of tibial trays in a range of various sizes. Each of the stem components is compatible with each of the femoral components and the tibal trays. Some of the stem components have a single slot formed therein, with other stem components having a pair of slots formed therein.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Filip Leszko
  • Publication number: 20140277534
    Abstract: A knee joint prosthesis is disclosed. The knee joint prosthesis can include a tibial baseplate, a tibial insert, and a spine. The tibial baseplate can include a tibial plateau, having a proximal surface and an opposing distal surface, and a tibial stem extending from the distal surface of the tibial plateau. The tibial insert can be located on the proximal surface of the tibial plateau and can include an aperture. The spine can extend through the aperture of the tibial insert and into a cavity of the tibial stem, from the proximal surface of the tibial plateau. The spine can be rotatable with respect to the tibial baseplate and the tibial insert. The knee joint prosthesis can further include a femoral component including a posteriorly-located femoral cam. The posteriorly-located femoral cam can engage the spine during movement of the knee joint prosthesis.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 18, 2014
    Inventor: Ray C. Wasielewski
  • Publication number: 20140277549
    Abstract: A femoral implant for use as a component of an artificial knee having a thin, lightweight body with an articulating surface and an interior surface, the interior surface having one or more reinforcing members extending therefrom and extending across a substantial portion of said surface.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Phantom Orthopedics, LLC
    Inventor: Shawn C. Ell
  • Publication number: 20140277528
    Abstract: A knee prosthesis kit includes an implant and an augment. The implant has a base and a stem extending from the base, and the augment has a base and a conical, cylindrical, or anatomic portion extending from the base. The augment base has at least two openings for receiving fasteners for securing the knee augment to the implant. The portion and the base define a bore for receipt of the implant post. A coupler includes a mating portion for receipt in a bore of an implant post, and a cone-shaped portion extending from the mating portion. A method of providing fixation of knee implants includes securing an augment to an implant and positioning a conical, cylindrical, or anatomic portion of the augment within the intramedullary canal of the tibia or femur.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Angela Black Mines, Michael Cole
  • Publication number: 20140257508
    Abstract: Improved systems and methods for deriving anatomical structures from indirect anatomical measurements as well as identifying abnormal, deformed, unusual and/or undesirable anatomical structures, and related improvements in designing and/or selecting patient-adapted (e.g., patient-specific and/or patient-engineered) orthopedic implants and guide tools, as well as related methods, designs, and models.
    Type: Application
    Filed: October 12, 2012
    Publication date: September 11, 2014
    Inventors: Raymond A. Bojarski, Wolfgang Fitz
  • Publication number: 20140243991
    Abstract: A system for replacing a trochlear groove region of a femur. The system includes a prosthesis that includes a bone contact surface and a periphery that defines an outer perimeter. The bone contact surface has a plurality of protrusions and a spatial configuration with respect to one another. Additionally, the system includes a first template that has a plurality of guide holes and a first periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. Also, included in the system is a second template that has a plurality of guide holes and a second periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. The plurality of guide holes of the second template are spatially arranged with respect to the second periphery to substantially match the spatial configuration of the plurality of protrusions of the prosthesis.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: STRYKER CORPORATION
    Inventors: Carlos E. Collazo, Stuart L. Axelson, JR., Michael C. Ferko, Emily Hampp
  • Patent number: 8790411
    Abstract: A femoral component of an artificial knee joint is configured with multiple different facets which are similar in size and shape for many different sizes, to simplify an associated method for forming a distal end of the femur to receive the femoral component. Jig embodiments are provided to form surfaces on a distal end of a femur to correspond with facets of the femoral component, with the same jig usable for femoral components of differing size. The femoral component includes medial and lateral condylar legs with a posterior facet of the femoral component exhibiting a negative angle relative to a central axis of the femur, to maximize contact and increase flexion of the artificial knee joint.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: July 29, 2014
    Inventor: Steven L. Mandell