Abstract: Modular bone implants, means of assembly, and their method of use are presented.

Abstract: An antibiotic delivery system including an intramedullary stem that is adapted to be removably mounted into a medullary canal of a bone. The stem includes a body having an inlet adapted to be in fluid communication with a source of liquid-borne antibiotic and a plurality of outlets disposed along the stem. A channel extends between the inlet and the plurality of outlets for delivering a fluid-borne antibiotic from the inlet to the plurality of outlets so as to distribute the antibiotic along the medullary canal in a controlled fashion. A method of treating an infected joint during a two-stage re-implantation of an orthopedic implant is also disclosed.

Abstract: A method for mounting a tibial condylar implant includes forming a tunnel having a proximal end on a lateral, medial, or anterior side of a proximal end of the tibia and a distal end on an at least partially resected lateral or medial facet at the proximal end of the tibia. A condylar implant is positioned over the distal end of the tunnel. A fastener is advanced into the tunnel from the proximal end of the tunnel. The fastener which is at least partially disposed within the tunnel is secured to the condylar implant.

Abstract: A modular tibial implant includes a tibial baseplate having a top surface, a bottom surface, and first and second openings extending between the top and bottom surfaces, and a bone engaging element having a distal end, a proximal end, and a longitudinal axis extending between the distal and proximal ends, the proximal end of the bone engaging element having a threaded opening alignable with the first opening of the tibial baseplate and a post insertible into the second opening of the tibial baseplate. The implant include a threaded fastener insertible into the aligned first opening and threaded opening, wherein the threaded fastener is rotatable for securing the proximal end of the bone engaging element to the bottom surface of the tibial baseplate, and a cam element insertible into the second opening of the tibial baseplate for engaging the post.

Abstract: An implant for on a resected articulation surface of a bone includes a tray having a top surface and opposition surface. An opening extends completely through the tray between the top surface and the bone apposition surface. A bearing member is mounted on the top surface of the tray, the bearing member having a top articular surface. Anchor downwardly projects away from the bone apposition surface of the tray, the anchor being adapted to engage the bone and being configured so that the anchor can selective pass completely through the opening of the tray. A fastener connects the anchor to the tray.

Abstract: A knee joint prosthesis can include a tibial component that can have a tibial tray. The tibial tray can include a platform-like tray that defines a superior surface and an inferior surface. The platform-like tray can have a tray perimeter and a raised wall formed on the inferior surface. The raised wall can be offset inboard relative to the tray perimeter. Porous material can be disposed on the inferior surface of the platform-like tray at a location generally between the raised wall and the tray perimeter.

Abstract: A knee joint prosthesis can include a tibial component that can have a tibial tray. The tibial tray can include a platform-like tray that defines a superior surface and an inferior surface. The platform-like tray can have a tray perimeter and a raised wall formed on the inferior surface. The raised wall can be offset inboard relative to the tray perimeter. Porous material can be disposed on the inferior surface of the platform-like tray at a location generally between the raised wall and the tray perimeter.

Abstract: A modular keel or stem for use as a tibial implant has a central stem portion including a tongue-like coupling portion for insertion into a grooved portion in a bone contacting portion of a tibial baseplate. The modular keel or stem may also include a pair of anti-rotation fins or ribs which extend medially and posteriorly on the medial side and laterally and posteriorly on the lateral side. Proximal portions of the ribs or fins may engage receptacles in the bone contacting of the tibial baseplate. A locking element is provided for engaging the keel or stem coupling portion and the baseplate after the coupling portion of the keel is inserted into the groove to prevent the disassembly the keel from the baseplate. In one embodiment, the baseplate is capable of being inserted in a direction offset from the anterior-posterior direction, such as a medial-lateral direction, after the keel has been implanted. A polymeric bearing insert is provided for placement onto the baseplate in a standard manner.

Abstract: A provisional prosthetic system and the surgical methods for utilizing the same. In one embodiment, the provisional prosthetic system includes a keel and a plate configured to be secured to the keel. The keel may further include a body and at least one fin extending outwardly therefrom. The fin functions to prevent rotation of the keel once it is implanted within a bone. In one embodiment, the plate includes a captured screw having a flanged head and external threads. The captured screw is retained by the plate and configured to secure the plate to the keel. In this embodiment, the captured screw extends through an aperture in the plate. Further, the captured screw may be retained by the plate due to the interaction of the flange head and external threads of the captured screw with the top and bottom surfaces of the plate, respectively.

Abstract: A knee replacement system includes a proximal tibial posterior camming portion defined by a first radius of curvature with a first origin in a first medio-lateral plane, a distal tibial posterior camming portion defined by a second radius of curvature with a second origin in a second medio-lateral plane, an anterior femoral camming portion of a posterior cam defined by a third radius of curvature with a third origin in the first medio-lateral plane, and a posterior femoral camming portion of the posterior cam and defined by a fourth radius of curvature with a fourth origin in the second medio-lateral plane, wherein the second origin is closer to the lateral tibial portion than the first origin, or the fourth origin is closer to the medial femoral portion than the third origin.

Abstract: Embodiments of the present invention provide a trial coupler system for use in preparing a patient for an implant. Certain embodiments provide a system including a coupling device (20) and a trial component interface (40) that allows a trial stem (100) to be offset in relation to the respective trial components at an orientation that matches the geometry of the patient. Once the precise positioning is obtained, the trial coupler device (10) can be locked while on the patient's bone so the assembly can be removed without disturbing the desired orientation.

Abstract: A tibial component of an artificial knee joint is provided which cooperates with a femoral component to allow pivoting rotation of the artificial knee joint in either a clockwise or counterclockwise direction. The tibial component includes a plate with a tapered dovetail rib thereon which allows an insert to be removably secured thereto to act as a meniscal structure for the tibial component. The insert has a proximal surface with left and right wells therein that include valleys to guide rotation of one condylar leg of a femoral component while holding a second condylar leg of the femoral component within the other one of the wells, allowing pivoting rotation in either direction. A nesting of the insert into a portion of the plate minimizes an overall height of the tibial component and minimizing tibial bone resection, while providing a greater resistance to shear forces upon the knee joint.

Abstract: A unicondylar knee implant system according to one embodiment includes a unicondylar femoral knee component having a single sagittal radius, a tibial bearing component, and a tibial tray component having a self-locking keel. The unicondylar knee implant system also provides for a locking mechanism for securing the tibial bearing component onto the tibial tray component. The unicondylar knee system allows for a simplified surgical technique, complete interchangeability between sizes, and a more MIS compatible implant system.

Abstract: An intramedullary stem that provides enhanced distal fixation and flexibility and methods for implanting the stem. Certain embodiments of the stem have primary and secondary flutes (or ridges or wedges). Other embodiments have transitional regions.

Abstract: One embodiment of the present invention relates to a knee prosthesis system with at least a first tibial portion element (a tibial insert or a tibial insert trial) and a second tibial portion element (a tibial insert or a tibial insert trial), wherein each of the first tibial portion element and the second tibial portion element has a different slope. Another embodiment of the present invention relates to a method of implanting a knee prosthesis, wherein the method utilizes at least a first tibial portion element (a tibial insert or a tibial insert trial) and a second tibial portion element (a tibial insert or a tibial insert trial), wherein each of the first tibial portion element and the second tibial portion element has a different slope.

Abstract: A tibial insert includes a platform defining an upper bearing surface and a bottom surface. A keel of the tibial insert is coupled to the bottom surface of the platform. A surgical method for knee anthroplasty is also disclosed.

Abstract: Modular bone implants, means of assembly, and their method of use are presented.

Abstract: A modular prosthesis assembly for insertion in bone, the assembly comprising: a tray element having a first surface including an extension member depending therefrom and an opposite second surface; a first adaptor having first and second ends, the first end having a profile part which receives and retains the extension member; a second adaptor comprising, a first end and a second end; the first end engagable with the second end of the first adaptor; a stem having first and second end, the first end including a formation which allows engagement of the stem with the second end of the second adaptor. The second end of said stem has a profile suitable for insertion in bone.

Abstract: A method for preparing at least a first bone for receiving a prosthesis can include positioning an IM member in a bone. A scaffold, skeleton or frame can be located onto the bone at a desired location. An alignment assembly can be coupled to the frame. The alignment assembly can be moved relative to the IM member to position the frame at a desired location relative to the bone. The frame can be fixed to the bone at the desired location. A cavity can be reamed into the bone using at least a portion of the alignment assembly as a guide. The alignment assembly can be removed from the frame. A cutting block can be coupled to the first attachment portion. Cuts can be prepared in the bone using the cutting block as a guide.

Abstract: A low-profile offset stem tibial implant includes a tray with a plate that extends transversely around a first tibial axis. The plate includes a distal surface adapted to engage against the prepared surface of the tibia. An engagement portion extends away from the distal surface of the plate substantially along the first tibial axis. A stem is provided with a distal end adapted to be introduced into the medullary canal of the tibia along a second tibial axis and a proximal end. One or more adapter elements are provided with a proximal portion sized to engage with the engagement portion of the plate along the first tibial axis. The adapter element also includes a distal portion adapted to engage with the proximal end of the stem along the second tibial axis. The adapter element permits adjustment of the medio-lateral and antero-posterior position of the second tibial axis relative to the first tibial axis.

Abstract: An improved one piece tibial tray uniquely characterized by its construction including an asymmetric keel extending from the bottom of the tibial tray base plate, whereby insertion of the tray during arthroplasty may be accomplished with a smaller than normal incision, enhancing the efficacy and safety of the surgical procedure. A fin on either or both sides of the asymmetric fin may be provided for enhanced stability of the tray.

Abstract: A mobile bearing tibial implant is described which comprises a tibial component and a mediscal bearing component. The tibial component comprises a tibial plate having a proximal face and a distal face. A tibial post extends from the distal face of the tibial plate which in use will anchor the tibial plate to the proximal end of a resected tibia. The tibial compent additionally includes a generally rectangular tibial projection extending upwardly from the proximal face of the tibial plate, the central longitudinal plane of the said tibial projection being co-linearly located on the sagittal plane passing substantially through the center of the knee. The meniscal bearing component has a substantially flat distal face for glidable seating on the tibial plate and a proximal face configured to receive in use an articulating condylar surface of a femoral component.

Abstract: An apparatus for transcutaneously transferring an amount of energy to an implantable orthopaedic device includes a primary coil. The primary coil has a resonant frequency matched to a resonant frequency of a secondary coil, which may form part of the implantable orthopaedic device. The primary coil may have an aperture configured to receive a portion of a patient's body or may include a substantially “C”-shaped core. A power circuit may be coupled with the primary coil to provide power to the coil. The apparatus may also include a wireless receiver, a measuring device, and/or a display.

Abstract: A method for mounting a tibial condylar implant includes forming a tunnel having a proximal end on a lateral, medial, or anterior side of a proximal end of the tibia and a distal end on an at least partially resected lateral or medial facet at the proximal end of the tibia. A condylar implant is positioned over the distal end of the tunnel. A fastener is advanced into the tunnel from the proximal end of the tunnel. The fastener which is at least partially disposed within the tunnel is secured to the condylar implant.

Abstract: A femoral hip stem explant system has an alignment body which is attached to two locations of a femoral bone and has several lockable collet type adjustment features to set the shaft of a reamer or end mill exactly in coincidence with the femoral bone cavity axis. The shaft of the end mill or reamer is supported by a sleeve member, which is inserted into a drill guide central aperture. The drill guide aperture is adjusted first and locked to be in line with the femoral bone cavity. Each of the sleeve members has the same mating outer diameter, which fits into the drill guide central aperture. Accordingly, the sleeve members can be interchanged into the drill guide aperture with shafts of differently sized reamers or end mills.

Abstract: In one embodiment of the present invention a mobile bearing knee prosthesis may include an interface (e.g., a spherical radius interface) comprised of a concave superior surface on a tibial tray and a convex inferior surface on a tibial insert. In another embodiment of the present invention a mobile bearing knee prosthesis may include an interface (e.g., a spherical radius interface) comprised of a convex superior surface on a tibial tray and a concave inferior surface on a tibial insert. In another embodiment of the present invention a mobile bearing knee prosthesis may include a bi-concave interface (e.g., having a “wave” like surface geometry). This “wave” like surface geometry may be at the second bearing (i.e., at the interface between a tibial insert and a tibial tray in the mobile bearing knee as opposed to the interface between the tibial insert and a femoral component).

Abstract: A modular knee prosthesis can include a femoral component having a superiorly extending portion, a first femoral bearing surface and a second femoral bearing surface. The superiorly extending portion can define a first tapered augment receiving surface. A tibial component can have an inferiorly extending portion and a tibial bearing surface. The inferiorly extending portion can define a second tapered augment receiving surface. A first augment can define a first receiving bore and a first stepped surface. A second augment can define a second receiving bore and a second stepped surface. The first and second augments are adapted to mate at the first and second stepped surfaces in a first position at the first tapered augment receiving surface of the femoral component and in a second position at the second tapered augment receiving surface of the tibial component.

Abstract: An assembly system configured to seat a first orthopedic component having either a male taper or a female taper with a second orthopedic component having the other of a male taper or a female taper. In one embodiment, the assembly system includes a taper seating connector having a fastener and a bushing moveable retained on the fastener. The fastener may be connected to the first orthopedic component and the bushing may be positioned adjacent the second orthopedic component. The corresponding tapers on the first and second orthopedic components may be configured to secure the first and second orthopedic components together. Thus, by exerting a sufficient force on the bushing, the bushing will move along the fastener, transferring the force to the second orthopedic component. In this manner, the corresponding tapers of the first and second orthopedic components may be seated.

Abstract: A knee implantation system for replacing a portion of a knee joint includes an unicondyler tibial implant configured to replace a portion of a tibia that includes a first member and a second member. The first member has a body portion that includes an articulating surface for replacing only a single superior articulating surface of the tibia. The second member has a textured surface. The second member is removably connected to the body portion and the textured surface is disposed about opposite the articulating surface.

Abstract: The present invention discloses a tibia impacter provided with an alignment guide function that helps an artificial tibia implant to be adjusted to the level condition when bone cement is applied to the top surface of the cut tibia and an artificial tibia implant is driven in and fixed. The tibia impacter comprises a guide bar which is installed vertically on one side of the tibia impacter for comparison with the mechanical axis of the tibia to compare the mechanical axis of the tibia and the guide bar, so that the level condition of the artificial tibia implant mounted on the top surface of tibia can be confirmed.

Abstract: A prosthetic knee system includes a tibial tray, a non-rotating tibial insert, and a rotating tibial insert. The non-rotating tibial insert and the rotating tibial insert are selectively couplable to the tibial tray such that a fixed or a mobile orthopaedic prosthesis may be configured. In some embodiments, the tibial tray may be a fixed or mobile tibial tray. Additionally, in some embodiments, the prosthetic knee system may include a femoral component.

Abstract: A prosthetic knee system includes a tibial tray, a non-rotating tibial insert, and a rotating tibial insert. The non-rotating tibial insert and the rotating tibial insert are selectively couplable to the tibial tray such that a fixed or a mobile orthopaedic prosthesis may be configured. In some embodiments, the tibial tray may be a fixed or mobile tibial tray. Additionally, in some embodiments, the prosthetic knee system may include a femoral component.

Abstract: A prosthetic knee system includes a tibial tray, a non-rotating tibial insert, and a rotating tibial insert. The non-rotating tibial insert and the rotating tibial insert are selectively coupleable to the tibial tray such that a fixed or a mobile orthopaedic prosthesis may be configured. In some embodiments, the tibial tray may be a fixed or mobile tibial tray. Additionally, in some embodiments, the prosthetic knee system may include a femoral component.

Abstract: A prosthetic knee system includes a tibial tray, a non-rotating tibial insert, and a rotating tibial insert. The non-rotating tibial insert and the rotating tibial insert are selectively couplable to the tibial tray such that a fixed or a mobile orthopaedic prosthesis may be configured. In some embodiments, the tibial tray may be a fixed or mobile tibial tray. Additionally, in some embodiments, the prosthetic knee system may include a femoral component.

Abstract: A modular keel or stem for use as a tibial implant has a central stem portion including a coupling portion for insertion into and through an opening in a tibial baseplate. The modular keel or stem may also include a pair of anti-rotation fins or ribs which extend medially and posteriorly on the medial side and laterally-posteriorly on the lateral side for engaging receptacles in the bone contacting of the tibial baseplate. A locking element is provided for engaging the keel or stem coupling portion and the baseplate after the coupling portion of the keel is inserted through the opening to prevent the disassembly the keel from the baseplate. The coupling element is capable of being inserted in a medial-lateral direction after the keel and baseplate have been implanted. A polymeric bearing insert is provided for placement on the baseplate which insert includes a recess or opening for receiving the coupling element.

Abstract: A prosthesis for replacing an articulating portion of bone is provided. The prosthesis can include an adaptor operable to replace a portion of the bone. The prosthesis can further include a sleeve coupled to the adaptor. The sleeve can define an offset coupling axis. The prosthesis can also include an articulating portion operable to replace the articulating portion of the bone. The sleeve can be positionable to couple the articulating portion to the offset coupling axis at a predetermined orientation.

Abstract: An orthopedic implant, such as a tibial tray, includes a body having a bone contacting surface with at least one and preferably two pegs extending from the bone contacting surface. Each of the pegs has a longitudinal axis angled with respect to the bone contacting surface and also angled in at least one direction consisting of a medial-lateral direction, an anterior-posterior direction and an inferior-superior direction. In the case of the tibial tray, the pegs form a non-perpendicular angle with the bone contacting surface of the baseplate and are angled in both a posterior direction and a medial or lateral direction.

Abstract: A low-profile offset stem tibial implant includes a tray with a plate that extends transversely around a first tibial axis. The plate includes a distal surface adapted to engage against the prepared surface of the tibia. An engagement portion extends away from the distal surface of the plate substantially along the first tibial axis. A stem is provided with a distal end adapted to be introduced into the medullary canal of the tibia along a second tibial axis and a proximal end. One or more adapter elements are provided with a proximal portion sized to engage with the engagement portion of the plate along the first tibial axis. The adapter element also includes a distal portion adapted to engage with the proximal end of the stem along the second tibial axis. The adapter element permits adjustment of the medio-lateral and antero-posterior position of the second tibial axis relative to the first tibial axis.

Abstract: A tibial prosthesis includes a tibial platform having a medial-lateral center and an inferior surface matable with a resected proximal tibia, and a modular keel that is fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial platform.

Abstract: A modular tibial component for a knee joint prosthesis. The modular tibial component includes a tray, a stem and an adapter assembly. The tray includes a support surface and downwardly extending extension having a generally circular shape. The stem includes a main body portion and an upwardly extending extension. The adapter assembly connects the tray and the stem. The adapter assembly includes a first generally cylindrical cavity receiving the downwardly extending extension of the tray and a second generally cylindrical cavity receiving the upwardly extension of the stem.

Abstract: The present invention provides a prosthetic trialing system for use in preparing a patient for an implant, and particularly, a tibial trialing system, as well as methods of using the trialing system to install the implant prostheses. Tibial trials according to the present invention employ intermediate stems or adapters (32) which connect to the plate trial (10). They therefore permit connection of the intermediate stem trial (32) to the trial plate (10) without interference to the proximal surface (12) of the plate trial (10) and without interference to the range of motion of a mobile bearing (62) on the plate trial (10). Additionally, a range of intermediate stem trials (32) and stems (52) may be offered to fit a range of plates (10) for various geometries and modularity.

Abstract: A tibial implant is provided having a stem, a tray, a bushing for joining the stem and the tray, and a locking member. In use, the stem of the implant is inserted into the medullary canal of a natural tibia and the tray rests on a resected surface at the proximal end of the tibia. The tray includes a central position and an engagement portion on a lower surface thereof. The bushing includes a proximal axis of alignment in alignment with the central position of the tray and a distal axis of alignment that is co-linear to the longitudinal axis of the stem. The engagement portion of the tray is comprised of a dovetailed ring member. The bushing also includes, on a proximal end thereof, an engagement surface having first and second pairs of surfaces for, respectively, passage through the opening of the ring member and sliding complementary engagement with the dovetailed ring member.

Abstract: Modular orthopedic implants for joint reconstruction and methods of use therein are described that comprise base, body, and stem components. The base receives an articulating portion on a first end and has a connector on a second end that mates with the body and stem. The tubular body has a tissue engaging external portion, and an internal bore. The stem has an elongated shaft configured to be situated inside of a bone, and a top end having a connector. In a group of two-connection embodiments, the base mates with the body to form a first connection and the base mates with the stem to form a second connection. In a group of three connection embodiments, the stem and body also mate to form a third connection. The connections are combinations of interference fit connections such as press fits, multiple press fit and tapered fit connections.

Abstract: A prosthetic component includes an adaptor having a first end and a second end. The first end includes an elongated male tapered body. The second end includes a flange extending radially outwardly from the male tapered body and having an anti-rotational/anatomically orientation component formed therewith. The second end also includes a female tapered aperture formed therein which has an anti-rotational/anatomical orientation component formed therewith. The flange may include an elongated portion having a porous annular surface thereon.

Abstract: A fixation device and method for attaching an external prosthesis to a bone. The fixation device includes a main body having a compliant portion operable to be expanded and contracted. The main body has a first end fixedly retained in the bone and a second end coupled to an extension for receiving the external prosthesis. The main body and the extension define respectively first and second engagement surfaces for constraining a bone graft therebetween.

Abstract: Modular bone implants, means of assembly, and their method of use are presented.

Abstract: The present invention provides a tibial tray assembly for attaching within a cavity formed in a tibia. The tibial tray assembly includes a main body, an anchor, and a compliant portion disposed between the main body and the anchor. The main body includes a tibial tray that is operable to engage a prepared tibia surface. The anchor is operable to be retained within the cavity formed in the tibia and includes an attachment mechanism located within the cavity and operable to fixedly attach the anchor within the cavity formed within the tibia. The compliant portion disposed between the main body and the anchor is operable to be expanded and contracted.

Abstract: A prosthetic knee system has a tibial component and a modular sleeve. The tibial component has a tibial tray, a stem and keels extending between the distal surface of the tray and the stem. The modular sleeve has an oval proximal surface with spaced reliefs. The reliefs and keels are sized, shaped and positioned to allow the modular sleeve to be mounted on the tibial component with the stem of the tibial component received in the interior channel of the sleeve and the keels of the tibial component received in the spaced reliefs of the modular sleeve, and to allow for some relative rotation between the tibial component and the sleeve. The system gives the surgeon the freedom to implant the tibial component alone, with the keels providing stability, or, in the case of bone deficiency, to implant the tibial component and sleeve as an assembly.

Abstract: Arthroplasty devices having improved bone in growth to provide a more secure connection within the body. Different embodiments disclosed include devices having threaded intramedullary components, devices configured to receive bone growth promoting substances, devices with resorbable components, and devices configured to reduce shear stress.

Abstract: Modular bone implants, means of assembly, and their method of use are presented.