Abstract: An orthopaedic prosthesis includes a tibial tray, a tibial insert configured to be coupled to the tibial tray, a hinge component configured to be received in a passageway of the tibial tray, and a femoral component configured to articular with the tibial insert. The hinge component includes a pair of hinge arms, each of which includes an axle extending therefrom that is configured to be received in an aperture of a corresponding sidewall of an intercondylar compartment of the femoral component. The axles of the hinge arms may be coaxial or non-coaxial. Additionally, each axle may be coaxial with or offset from a center of a constant radius of curvature that defines an articular surface of a corresponding condyle of the femoral component. The axles may have an outer surface of various shapes depending on the embodiment.

Abstract: An orthopaedic prosthesis system includes a femoral component configured to be attached to a distal end of a patient's femur. A tibial tray is configured to be attached to a proximal end of a patient's tibia. A tibial insert is configured to be positioned between the femoral component and the tibial tray. An elongated pin rotatably couples the tibial insert to the femoral component.

Abstract: The elbow prosthesis includes an ulnar component that has a bearing end and a stem. The stem attached to the bearing end and extends in a distal direction from it. The elbow prosthesis also has a humeral component that includes a holder end and a stem with the stem extending in a proximal direction from the holder end. The prosthesis further includes at least one bearing member that is connected to the holder end with the bearing end being attached within the holder end to allow for rotation and articulation against the at least one bearing member. The bearing end and holder are attached to each other by a coupling mechanism that includes an opening positioned on the posterior aspect of the holder end and a mating surface on the bearing body. A method of using the elbow prosthesis and a total elbow prosthesis kit are also disclosed.

Abstract: A total knee replacement prosthesis is presented whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces include the inter-condylar as well as condylar regions. A knee replacement implant includes a femoral component and a tibial component. The femoral component includes an outer femoral bearing surface shaped to match an outer bearing surface of an anatomic femur. The tibial component includes a proximal tibial bearing surface based on a proximal baseline tibial bearing surface that is shaped to conform to an envelope of a composite of sequence of positions and orientations of the femoral component throughout a full range of flexure angles and axial rotation angles of the femur relative to the tibia.

Abstract: A hinged knee prosthesis comprises a tibial component and a femoral component. The tibial component is configured to attach to a tibia. The tibial component has a bearing surface. The femoral component is configured to hingedly attach to the tibial component and rotate relative to the tibial component. The femoral component comprises a medial condyle and a lateral condyle. The medial and lateral condyles have an eccentric sagittal curvature surface configured to rotate and translate on the bearing surface of the tibial component. A method of rotating a hinged knee through a range of flexion is provided. The method fixedly attaches a femoral component to a tibial component. Axial rotation of the femoral component is induced relative to the tibial component when the hinged knee is flexed.

Abstract: An orthopaedic prosthetic includes a femoral component including a pair of condyles spaced apart to define an intercondylar notch. A tibial component includes a tray and a platform pivotally coupled to the tray. A modular insert is configured to be selectively coupled to the femoral component to couple the femoral component to the tibial component.

Abstract: A knee joint prosthesis for a tibia and femur can include a tibial component, a tibial bearing, and a post. The tibial bearing can include a first bearing portion, a second bearing portion, and an aperture. The first bearing portion can be positionable on a first side of the sagittal axis and can have a first shape. The second bearing portion can be positionable on a second side can have a second shape different than the first shape. The post, together with the first bearing portion and the second bearing portion, can be configured to promote the femur to pivot substantially about the first bearing portion.

Abstract: A talar implant system and method in one embodiment includes an articulation component with an articulating surface extending upwardly from a first plane and configured to articulate with a tibial component, and a distal portion for implanting in a bone, the distal portion having a longitudinal axis and configured to be rigidly coupled with respect to the first plane at any angular position selected from a range of angular positions within a second plane perpendicular to the first plane.

Abstract: A mechanism has four connected links to mimic the motion of a knee joint. A lower link is oriented towards the vertical. A leverage ratio between flexion of the knee and relative angular displacement of certain links in the mechanism remains fairly steady over much of the range of motion of the mechanism. The mechanism may be used to drive an energy harvesting gearbox with steadier and more efficient energy harvesting at deep flexion, as well as with quieter operation.

Abstract: The invention relates to a knee joint endoprosthesis has a tibia part, a femur part, a meniscus part arranged on the tibia part in mutually non-rotatable manner and a connecting device for connecting the tibia part to the femur part in articulated manner. Said femur part comprises at least one femur condyle having a femur condyle surface. Said meniscus part comprises at least one upper surface which faces the femur part and has at least one meniscus joint surface which touches the femur condyle surface of the at least one femur condyle. Said femur part and the tibia part are mounted such as to be rotatable relative to each other about a rotational axis.

Abstract: A knee prosthesis system constructed in accordance to one example of the present disclosure can include a femoral component, a tibial component, a first femoral component insert, a second femoral component insert, a first tibial bearing, and a second tibial bearing. The knee prosthesis system may be configured in one of a non-hinged configuration and a second hinged configuration. In the first non-hinged configuration, the first femoral component insert is positioned relative to the femoral component and the first tibial bearing is positioned onto the tibial component. In the second hinged configuration, the second femoral component insert is positioned relative to the femoral component and the second tibial bearing is positioned onto the tibial component.

Abstract: A posterior cruciate ligament retaining knee implant prosthesis comprising a femoral component including a medial condyle and a lateral condyle separated from one another by an intercondylar channel adapted to accommodate throughput of a native cruciate ligament, both the medial condyle and the lateral condyle posteriorly terminate individually, the medial condyle including a medial condyle bearing surface and the lateral condyle including a lateral condyle bearing surface, the femoral component including an anterior cam, and a tibial component including a medial condyle receiver having a medial condyle receiver bearing surface, the tibial component also including a lateral condyle receiver having a lateral condyle receiver bearing surface, the tibial component also including an anterior post.

Abstract: A knee prosthesis system constructed in accordance to one example of the present disclosure can include a femoral component, a tibial component, a first femoral component insert, a second femoral component insert, a first tibial bearing, and a second tibial bearing. The knee prosthesis system may be configured in one of a non-hinged configuration and a second hinged configuration. In the first non-hinged configuration, the first femoral component insert is positioned relative to the femoral component and the first tibial bearing is positioned onto the tibial component. In the second hinged configuration, the second femoral component insert is positioned relative to the femoral component and the second tibial bearing is positioned onto the tibial component.

Abstract: A tibial prosthesis assembly including a tibial component and a tibial insert. The tibial component includes an inferior bone engaging surface, a superior surface, and a first retention feature. The tibial insert includes an inferior tibial component engaging surface, a superior bearing surface, and a second retaining feature. The first and the second retaining features cooperate to mate the tibial insert with the tibial component at one of a plurality of fixed rotational orientations relative to the tibial component.

Abstract: A rolling hinge device comprises two substantially parallel winding cylinders, longitudinal link element-forming winding means, the winding means being able to maintain a predetermined distance between the winding cylinders and being wound around winding cylinders, and at least two flexible tracks, a flexible track being fixed to each winding cylinder, the flexible tracks being arranged facing one another and having a point of contact, a prestressing force being applied at said point of contact of the flexible tracks under the effect of the winding means. At least one flexible track comprises at least one slot produced over at least a part of its length, the slot delimiting a plurality of flexible beam sections of determined profiles.

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.

Abstract: An artificial knee joint includes a femoral component (1) and a tibial component (2). The femoral component (1) includes an intercondylar box (11). A cam (12) is provided on posterior of the intercondylar box (11). The tibial component (2) includes a medial condyle bearing surface (21) and a lateral condyle bearing surface (22) arranged on right and left side respectively. A post (23) is provided between the medial condyle bearing surface (21) and the lateral condyle bearing surface (22). The post (23) is adapted to the intercondylar box (11). The post (23) has a first arc surface (231) on the lateral side of posterior surface. The post (23) has a second arc surface (232) on the posterior surface and on the medial side of the first arc surface (231). A third arc surface (121) and a forth surface (122), cooperating with the first arc surface (231) and the second arc surface (232), are provided on the cam (12) accordingly.

Abstract: A bone augment adaptor is configured to be inseparably coupled to a bone augment. A first end of the adaptor is configured to be connected to an epiphyseal replacement portion of a modular joint replacement prosthesis. A second end of the adaptor may be configured to be connected to a diaphyseal anchoring portion of the prosthesis.

Abstract: A temporary knee replacement assembly and kit includes a tibial plate that attaches to the tibia, a tibial rod that extends through the plate into the medullary cavity and abuts the plate. A femoral plate attaches to the femur, and a femoral rod extends through the second plate into the femur medullary cavity and abuts the plate. A locking spacer connects the two rods. The spacer may be length adjustable or may be provided in multiple sizes for length selection. One or both of the rods may include a bone cement/antibiotic coating to provide antibiotic treatment to the tissue. The kit may include multiple tibial and femoral rods, multiple tibial and femoral plates, and multiple locking spacers, to accommodate different applications.

Abstract: A knee prosthesis is provided having a femoral component (1) with a pair of laterally spaced condylar formations (2) at one end, and a tibial component (3) having a transverse platform (4) supporting a shock absorbing bumper (5) interposed between the platform and condylar formations with the tibial component supporting a ball (6) of a ball and socket joint. The socket (8) is provided in a generally cylindrical bearing (9) having an axis extending generally parallel to a longitudinal axis of the femoral component. The bearing is held captive in a recess that is between the two laterally spaced condylar formations and is formed in the region of said end of the femoral component. The axis of the bearing is preferably inclined laterally at an angle of about 5° relative to the axis of the femoral component so that it is able to line up with a mechanical axis of a lower limb.

Abstract: A knee prosthesis is provided for use in knee arthroplasty. In one exemplary embodiment, the present invention provides a tibial prosthesis having a tibial baseplate with a fixed medial bearing component and a mobile lateral bearing component. In one exemplary embodiment, the lateral bearing component is secured to the lateral portion of the tibial baseplate utilizing at least one prosthetic ligament. Additionally, in one exemplary embodiment, a stop is provided to limit anterior or posterior movement of the lateral bearing component relative to the tibial baseplate. For example, the stop may be defined by cooperating shoulders formed on the lateral bearing and the tibial baseplate.

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.

Abstract: A system and method for sharing and absorbing energy between body parts. In one particular aspect, the system is an unlinked structure which facilitates absorbing energy between members forming a joint such as between articulating bones.

Abstract: A temporary knee replacement assembly and kit includes a tibial plate that attaches to the tibia, a tibial rod that extends through the plate into the medullary cavity and abuts the plate. A femoral plate attaches to the femur, and a femoral rod extends through the second plate into the femur medullary cavity and abuts the plate. A locking spacer connects the two rods. The spacer may be length adjustable or may be provided in multiple sizes for length selection. One or both of the rods may include a bone cement/antibiotic coating to provide antibiotic treatment to the tissue. The kit may include multiple tibial and femoral rods, multiple tibial and femoral plates, and multiple locking spacers, to accommodate different applications.

Abstract: An internal unloader brace includes an elongate bending member having an intermediate portion configured to bend under resistance such that joint forces are unloaded.

Abstract: An orthopaedic knee prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The femoral component includes a condyle surface curved in the sagittal plane. The radius of curvature of the condyle surface decreases gradually between early-flexion and mid-flexion. Additionally, in some embodiments, the radius of curvature may be increased during mid-flexion.

Abstract: A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component.

Abstract: Various embodiments are directed to femoral and tibial bases that form structures of an implantable mechanical energy absorbing system. According to one embodiment, the bases include a low-profile body having a elongate and a curved body portion. One end of the base is elevated as compared to another end. An inner surface of the low-profile body has a raised portion extending along the elongate, straight portion of the low-profile body. The bases also include a plurality of openings positioned along the low-profile body for alignment and purposes of affixation to body anatomy.

Abstract: A system and method for sharing and absorbing energy between body parts. In one particular aspect, the system is an unlinked structure which facilitates absorbing energy between members forming a joint such as between articulating bones.

Abstract: Implantable assemblies for manipulating energy transferred by members defining an anatomical joint, and methods of implanting and using. The members of the anatomical joint collectively define a path of motion. An assembly includes a first component configured to be attached to a first member of the anatomical joint; a second component configured to be attached to a second member of the anatomical joint; and a joint joining the first and second components. The first component includes a first flex member and the second component includes a second flex member. The first and second flex members are configured to flex to absorb energy transferred by the members of the anatomical joint.

Abstract: A custom knee prosthetic includes a polycentric rolling contact joint, whose instantaneous center of rotation coincides with the instantaneous center of rotation of a patient's knee joint.

Abstract: Implantable assemblies for manipulating energy transferred by members defining an anatomical joint, and methods of implanting and using. The members of the anatomical joint collectively define a path of motion. An assembly includes a first component configured to be attached to a first member of the anatomical joint; a second component configured to be attached to a second member of the anatomical joint; and a joint joining the first and second components. The first component includes a first flex, member and the second component includes a second flex member. The first and second flex members are configured to flex to absorb energy transferred by the members of the anatomical joint.

Abstract: A joint prosthesis has a bending hinge, which is formed by a hinge fork and an axle pin, which comprises two axle stubs, which are arranged in an installation position for insertion, in which installation position the axle stubs are retracted in a coupling piece, and in an expanded position after implantation by movement in the axial direction into aligned hinge holes of the hinge fork, wherein the axle pin has two bearing areas at the ends of the axle pin and a joining area lying therebetween, and the axle pin is separated in the joining area along a plane extending in the axial direction, which plane intersects with the jacket of the axle pin at two points.

Abstract: Total knee replacements for hinged knee implants include a tibial member, a femoral member, a hinge assembly having a laterally extending axle configured to hingedly attach the femoral member to the tibial member, and a lock mechanism in communication with the hinge assembly. The lock mechanism is configured to (i) lock the femoral member in alignment with the tibial member for a full extension or other defined stabile walking configuration to thereby allow an arthrodesis or stiff knee gait and (ii) unlock to allow the femoral and tibial members to pivot relative to each other for flexion or bending when not ambulating.

Abstract: A knee prosthesis includes a femoral component, a tibial component, and a coupling component interconnecting the femoral component and the tibial component. The tibial component includes ball. The femoral component is configured to move relative to the tibial component. The coupling component defines an internal cavity including a first spherical end portion and a second spherical end portion. The internal cavity is dimensioned to receive the ball of the tibial component. The ball is repositioned between the first spherical end portion and the second spherical end portion of the internal cavity upon movement of the femoral component relative to the tibial component.

Abstract: A system for replacing a portion of an articular surface including providing an implant site and installing an implant into the implant site. The implant site includes a first and a second excision site which at least partially intersect with one another. Each of the first and second excision sites are formed by providing a respective axis and excising a portion of the articular surface relative to the respective axes.

Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.

Abstract: A knee prosthesis includes a femoral component, a tibial component, and a coupling component interconnecting the femoral component and the tibial component. The tibial component includes ball. The femoral component is configured to move relative to the tibial component. The coupling component defines an internal cavity including a first spherical end portion and a second spherical end portion. The internal cavity is dimensioned to receive the ball of the tibial component. The ball is repositioned between the first spherical end portion and the second spherical end portion of the internal cavity upon movement of the femoral component relative to the tibial component.

Abstract: Methods, systems, and devices for replacement of a joint with a prosthetic system that replicates the natural kinematics of the joint is disclosed.

Abstract: A hinged knee prosthesis (10) comprises a tibial component (16) and a femoral component (14). The tibial component (16) is configured to attach to a tibia. The tibial component has a bearing surface (128). The femoral component (14) is configured to hingedly attach to the tibial component (16) and rotate relative to the tibial component (16). The femoral component (14) comprises a medial condyle (30) and a lateral condyle (32). The medial and lateral condyles (30 and 32) have an eccentric sagittal curvature surface (50) configured to rotate and translate on the bearing surface (128) of the tibial component (16). A method of rotating a hinged knee (10) through a range of flexion is provided. The method fixedly attaches a femoral component (14) to a tibial component (16). Axial rotation of the femoral component (14) is induced relative to the tibial component (16) when the hinged knee (10) is flexed.

Abstract: A prosthetic knee joint assembly includes a femoral component that engages a femur and at least one bearing that supports articulation of the femoral component thereon. Also, the assembly includes a tibial tray that engages a tibia and that supports the bearing. A ligament link coupling component is included on the femoral component or the tibial tray. The ligament link coupling component is operable to couple to a ligament link to couple the ligament link to the femoral component or the tibial tray. Moreover, the assembly includes an opening included on the other of the femoral component or the tibial tray. The ligament link is received in the opening to bypass the other of the femoral component or the tibial tray to operably couple to the respective one of the femur or the tibia.

Abstract: An orthopaedic device (1) for the mobile connection of a first and a second bony segment (4, 5) of an organic device for cooperating with or substituting a natural articulation comprising a first working surface (9) related to the first cooperating segment (4) with a second working surface (10) related to the second bony segment (5) in order to constrain (guide) the relative motion between the said bony segments (4, 5); the first and the second working surface (9, 10) are respectively practically shaped as the axodes of the relative motion of a first and a second link of a linkage practically equivalent to the natural articulation; in particular the first and the second link are corresponding, in the linkage, to the first and the second bony segment (4, 5).

Abstract: A knee arthrodesis implant has a femur nail inserted in the bone marrow canal of the femur, and a tibia nail inserted in the bone marrow canal of the tibia, the nails being rigidly connected to each other by a connecting means. The problem of providing a knee arthrodesis implant having increased modularity as the result of increased length variability, having a reduced number of parts, and allowing simplified modification is addressed.

Abstract: An artificial joint as an endoprosthesis for a human joint, including a first joint part having two first functional surfaces, a second joint part having two second functional surfaces, the two first and second functional surfaces of each joint part being convex-concave, concave-convex, or convex-convex in a proximal-distal direction, a projection associated with the first joint part; and a recess associated with the second joint part. The recess is configured to engage with the projection so as to determine a relative position of the first and second joint parts in a transverse plane of the joint and to form a stop for a sliding movement of the first and second joint parts relative to each other. The two first functional surfaces are pivotable about a pivot axis with respect to the second functional surfaces.

Abstract: An orthopaedic prosthesis includes a tibial bearing, a femoral component, and a hinge post coupled to the tibial bearing and the femoral component. The hinge post includes a medial and lateral axle. A pair of bushings are coupled to the axles and received in an internal chamber of the femoral component. The prosthesis may also include a plug received in the internal chamber and positioned to secure the hinge post to the femoral component. The femoral component is configured to rotate about an axis defined by the axles. In some embodiments, the femoral component may include a housing and a patella bearing separate from the housing.

Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include tethering means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.

Abstract: An artificial knee joint in which plural flexions are formed at a femur joint member includes a femur joint member which is joined to an end portion of a tibia near a femur; a tibia joint member which is joined to an end portion of a femur near a tibia; and a bearing member between the femur joint member and the tibia joint member, wherein the femur joint member includes plural side flexions which have various radii of curvature in order to make the contact surface become enlarged so that the stress may be dispersed at the contact portion with the tibia.

Abstract: A knee prosthesis comprises a femoral component, a tibial component and a bearing component between the femoral and tibial components. The femoral component defines medial and lateral condyles and an intercondylar box, and the bearing component has respective surfaces matching the condylar surfaces and engaging therewith when the knee is extended over a first range of flexion. The femoral component defines at the area of the intercondylar box a cam and a follower is defined by the bearing component, the cam and following engaging over a second range of flexion.

Abstract: An orthopaedic knee prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The femoral component includes a condyle surface curved in the sagittal plane. The radius of curvature of the condyle surface decreases gradually between early-flexion and mid-flexion. Additionally, in some embodiments, the radius of curvature may be increased during mid-flexion.

Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing. A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia. The hinge post is preassembled to the femoral component so that such assembly is not required during the implantation procedure. A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.