Abstract: An acetabular cup assembly for use in the replacement of a hip joint, including a shell having a substantially hemispherical outer surface and an inner surface. The inner surface includes a groove extending at least partially around the inner surface. A provisional liner is provided which is receivable within the shell, the liner including a hemispherical cavity and articulation surface for receipt of the femoral head of a femoral prosthesis, and at least one flexible tab portion which engages the groove of the shell in a snap-fit manner.

Abstract: A prosthesis to replace a portion of the anatomy, such as the acetabulum, can include a first portion. A second prosthesis portion can be positioned relative to the shell to provide the bearing surface to articulate with a femoral head prosthesis or femoral head. The second prosthesis portion can include a connection portion to engage a connection portion in the shell.

Abstract: Prosthetic hip stems and acetabular cups for use in prosthetic hip joints. The hip stem may include a core having a stem portion and a neck portion, a polymer matrix layer substantially covering the stem portion of the core, and a porous metal layer substantially covering the polymer matrix layer. The polymer matrix layer connects the core and the porous metal layer and provides a stiffness for the hip stem which more closely mimics the stiffness of bone than do known hip stems. The hip stems and acetabular cups additionally include a number of improvements adapted for more optimized results with certain types of patient anatomy, such as the anatomy of female patients, for example.

Abstract: A prosthetic liner includes a convex exterior surface, a concave interior surface and a rim portion connecting the interior surface and the exterior surface. The liner includes a plurality of recesses and a plurality of fingers. Each of the plurality of recesses is formed in the exterior surface of the liner without extending to the interior surface of the liner. The plurality of fingers is positioned in the plurality of recesses and each of the plurality of fingers is connected to the exterior surface and extends toward the rim portion. The plurality of fingers may be resiliently moveable in the plurality of recesses. The plurality of fingers may be integral with the exterior surface of the liner. The rim portion may define a plane into which at least one of the plurality of fingers extends.

Abstract: Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Mounting members include, for example, flanges, blades, hooks, and plates. In some embodiments, the orthopedic attachments may be adjustably positionable about the base member or other attachments, thereby providing modularity for assembling and implanting the device, and various securing and/or locking mechanisms may be used between the components of the implant.

Abstract: An acetabular cup assembly for a prosthetic hip joint is disclosed. This assembly includes an outer shell having at least one shell extension, an adaptor having at least one adaptor extension, and an insert. The inclusion of an extension on the outer shell and an extension on the adaptor allows for easier manipulation and implantation of the assembly.

Abstract: A pre-assembled orthopaedic implant adapted for improved gas sterilization. The implant includes a first component adapted for assembly with a second component such that a mating surface of the first component is in close proximity with a mating surface of the second component. At least one gas conduit associated with the mating surface of the first component facilitates a sterilizing gas to penetrate into and dissipate from the interface defined by the mating surfaces.

Abstract: Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. A cup member that fits within an implantable shell and has mounting members that anchor an implant to a patient's bone or soft tissue may be provided. The cup member may fit within the shell and have an exterior surface configured to mate with a corresponding interior surface of the shell to couple the cup member to the shell. The mounting members may be integral with the cup member, or may be adjustable to provide flexibility to accommodate a specific implant or patient anatomy.

Abstract: An acetabular cup assembly can include a cup portion and a bearing. The cup portion can include a porous metal outer layer having a first thickness and a solid titanium inner layer having a second thickness. A mating feature can be formed between the cup portion and the bearing. The bearing can be adapted to be selectively secured to the titanium inner layer. In one example, the bearing is formed of cobalt.

Abstract: An introduction instrument for inserting a liner into an acetabular shell is disclosed. The instrument includes a suction device which may be selectively released once the liner is appropriately situated in the acetabular shell. Such selective release prevents disruption of the positioning of the liner and/or the acetabular shell.

Abstract: In order to avoid any metallic wear of the material of the outer shell of a hip joint socket for implantation into the pelvic bone, comprising an outer shell consisting of metal and an insert arranged in it for supporting a joint ball of a femur implant, due to the joint ball sliding past the lower edge of the outer shell it is suggested that the lower edge of the outer shell be covered by a non-metallic material.

Abstract: A prosthesis for replacing a portion of the anatomy including an outer bone engaging surface and an inner bearing surface. The prosthesis may include a rim disposed between the inner bearing surface and the outer bone engaging surface. The rim may include at least one contour operable to reduce loading on the rim.

Abstract: Devices, apparatus, and systems for replacing at least some of the functionality of the natural hip joint and associated methods of implantation are disclosed. In one aspect a prosthetic acetabular cup system is provided. The system includes a metal shell comprising an outer surface for securely engaging a prepared portion of an acetabulum and an opposing inner surface. In some instances, portions of the inner and outer surfaces define an anchoring section that is deformable between an insertion configuration—where the anchoring section projects inwardly from the inner surface—and an anchoring configuration—where the anchoring section projects outwardly from the outer surface to define an anchoring protrusion for engaging the prepared portion of the acetabulum. In some embodiments, the system also includes a pliable articulating component having an outer surface including at least one engagement feature sized and shaped to engage with the metal shell.

Abstract: The present invention relates to universal liner assemblies for use during hip joint replacement surgeries, kits providing a plurality of universal liners, and methods of manufacturing and implanting the universal liners. The universal liners allow the surgeon a greater degree of selection of liners and shells, without being tied to typical liner/shell connections based on material connection constraints.

Abstract: An acetabular implant for hip replacement surgery includes a shell component and first and second alternative bearing components interchangeably engageable with the shell component to provide a choice in bearing components. The shell component has a shell component engagement mechanism suitable for engaging the first alternative bearing component. A conversion ring is also engageable with the shell component, so that a shell component/conversion ring assembly provides a second shell component engagement mechanism suitable for engagement with the second alternative bearing component.

Abstract: A trial implant kit includes a plurality of intermediate components and a plurality of inner components. Each of the plurality of intermediate components has a uniform inner surface, although at least two of the plurality of intermediate components having distinct outer surfaces. Each of the distinct outer surfaces is configured to engage one of a plurality of acetabular shell component geometries. Each of the plurality of inner components has a uniform outer surface portion and a bearing surface, the uniform outer surface portion configured to be received by the uniform inner surface of any of plurality of intermediate components. The bearing surface is configured to engage a femoral head. At least two of plurality of inner components having distinct bearing surface configurations.

Abstract: An acetabular prosthesis assembly can include an acetabular cup and a first liner. The acetabular cup can have an outer surface, an inner surface and an upper rim extending between the outer surface and the inner surface. The acetabular cup can have a cup connection portion including a groove formed on an upper face of the upper rim. The first liner can have an outer cup engaging surface and a liner connection portion that extends from a flange of the first liner. The liner connection portion can have a finger that is received by the groove formed on the upper face of the acetabular cup that selectively couples the liner connection portion with the cup connection portion in an assembled position.

Abstract: An acetabular implant assembly for replacing a portion of the anatomy is provided. The acetabular implant assembly can include a fiber-reinforced polymeric cup having an exterior surface that engages the anatomy and an interior surface. The acetabular implant assembly can also include a metal or ceramic bearing liner, which can be coupled to the interior surface of the with an acetabular implant assembly cup via a taper lock connection. The metal or ceramic bearing liner can have an interior bearing surface. The acetabular implant assembly can include a metal articulating member, which can be movable within the interior bearing surface to replace the articulating portion of the anatomy.

Abstract: A modular acetabular cup assembly (10, 100, 200, 300, 350) for use with multiple bearing liners (32, 110, 212, 310, 354) is disclosed. The acetabular cup assembly includes a shell (12) having a tapered inner wall (28) and two circumferential grooves (24, 26). The shell (12) may be used with polyethylene, ceramic, metal, and other types of liners.

Abstract: A trial implant kit includes a plurality of intermediate components and a plurality of inner components. Each of the plurality of intermediate components has a uniform inner surface, although at least two of the plurality of intermediate components having distinct outer surfaces. Each of the distinct outer surfaces is configured to engage one of a plurality of acetabular shell component geometries. Each of the plurality of inner components has a uniform outer surface portion and a bearing surface, the uniform outer surface portion configured to be received by the uniform inner surface of any of plurality of intermediate components. The bearing surface is configured to engage a femoral head. At least two of plurality of inner components having distinct bearing surface configurations.

Abstract: A system for replacing a hip joint can include a first acetabular cup formed of a first material and having a first inner diameter and a first thickness. A second acetabular cup can be formed of a second material and having a second inner diameter and a second thickness. A first femoral hip prosthesis can include a first femoral head that is alternately accommodated by either of the first or second acetabular cups. A bearing can be adapted to be interposed between the first femoral head and one of the first or second acetabular cups. The first and second inner diameters can be the same. The first thickness can be less than the second thickness. The first material can be distinct from the second material.

Abstract: A system and method for placing a prosthetic acetabular cup within an acetabulum are disclosed. The system may comprise an acetabular cup with an eccentric socket. The acetabular cup may be substantially hemispherical with a cup rim and a portion of the cup rim removed defining a relief. The cup may accommodate a concentric liner in an eccentric position. Screw apertures may be present on the periphery of the cup and the screw trajectories may converge toward the dome of the cup. The cup is attached to a tool which is offset relative to the cup because of the substantially eccentric socket. The relief, when the cup is secured to the acetabulum, is positioned substantially anterior and the socket is positioned more posterior to provide a more natural center of rotation of a femoral head within the socket. The first relief reduces impingement of the acetabular cup on soft tissue.

Abstract: Disclosed is an acetabular cup implant for an artificial hip joint suitable for being fitted to a bone using a shape memory alloy. The acetabular cup implant for an artificial hip joint comprises an acetabular cup formed of a shape memory alloy having a semi-spherical shape with a hollow section, and is capable of expanding upon exposure to a body temperature. A bearing installed in the hollow section of the acetabular cup is suitable for receiving a femoral head to facilitate rotation of a femur.

Abstract: A metal-backed acetabular implant and a method of forming the same.

Abstract: An acetabular prosthesis and method for its use in an orthopedic surgery is disclosed. The acetabular prosthesis forms a metal bearing, which articulates with a femoral head. The acetabular prosthesis is also configured so as to accept a polymer constraining ring. Should a revision surgery be necessary, the acetabular prosthesis may accept a polymer bearing liner over the metal bearing. The polymer bearing liner then articulates with the femoral head.

Abstract: The invention solves the problem of anchoring a prosthetic component into compliant, cancellous bone by a thin, preferably pure titanium, or a titanium-based alloy, perforated, hence hydraulically open, shell (1, 13), spaced apart from the second, non-perforated shell (2, 14). In most applications, dictated by the anatomical site of insertion, shells are approximately hemispherical in form, connected to each other at the equator. The solid shell may contain a further, articulating component of the joint, e.g. a polymer or a ceramic insert, or it may serve that function itself. One or both components of a joint prosthesis can be anchored according to the invention.

Abstract: One embodiment of the present invention relates to a prosthesis, comprising: an acetabular cup, wherein the cup has an open end and a closed end, wherein the open end of the cup is defined by a rim and wherein the rim has an outer facing surface; at least one cavity disposed in the rim, wherein the cavity extends from a first end of the cavity at the outer facing surface to a second end of the cavity that is towards the closed end of the cup, and wherein the cavity comprises an undercut at the second end of the cavity; a locking ring; and at least one tab extending from the locking ring, wherein the tab comprises a first leg and a second leg having a separation therebetween, wherein each leg has a first end and a second end, wherein the first end of each leg is at the locking ring, wherein the second end of the first leg comprises a tab protrusion, and wherein at least the second leg is resilient such that the separation between the first leg and the second leg is reduced when the second leg is deflected towa

Abstract: Devices, apparatus, and systems for replacing at least some of the functionality of the natural hip joint and associated methods of implantation are disclosed. In one aspect a prosthetic acetabular cup system is provided. The system includes a metal shell comprising an outer surface for securely engaging a prepared portion of an acetabulum, an opposing inner surface, and at least one snap-fit engagement feature associated with the inner surface. The metal shell has a thickness less than about 1.0 mm between the outer surface and the inner surface. The system also includes a pliable articulating component having an outer surface including at least one snap-fit engagement feature sized and shaped to snap-fittingly engage the at least one snap-fit engagement feature of the metal shell. The pliable articulating component also includes an inner surface for articulatingly receiving a femoral head. The second component has a thickness less than about 3.0 mm.

Abstract: A prosthetic liner includes a convex exterior surface, a concave interior surface and a rim portion connecting the interior surface and the exterior surface. The liner includes a plurality of recesses and a plurality of fingers. Each of the plurality of recesses is formed in the exterior surface of the liner without extending to the interior surface of the liner. The plurality of fingers is positioned in the plurality of recesses and each of the plurality of fingers is connected to the exterior surface and extends toward the rim portion. The plurality of fingers may be resiliently moveable in the plurality of recesses. The plurality of fingers may be integral with the exterior surface of the liner. The rim portion may define a plane into which at least one of the plurality of fingers extends.

Abstract: An acetabular cup assembly for a prosthetic hip joint is disclosed. This assembly includes an outer shell having at least one shell extension, an adaptor having at least one adaptor extension, and an insert. The inclusion of an extension on the outer shell and an extension on the adaptor allows for easier manipulation and implantation of the assembly.

Abstract: A method and apparatus for implanting various portions of a prosthesis into an anatomy. The instruments can include portions that allow for positive and rigid engagement with a selected prosthesis member to allow for positioning it relative to the anatomy. Further, various instruments can include portions that allow it to engage or match with marking portions or alignment portions on a first prosthesis member to align a second prosthesis member with the first one. Further, methods of using the various instruments are taught and providing for a less or minimally invasive procedure.

Abstract: There is provided an acetabular shell liner, and particularly a constrained liner, having a variable rim surface geometry to improve the range of motion of a femoral component within the liner and decrease the incidence of dislocation and subluxation. There are also provided methods of making and using the acetabular shell liner. Prosthetic devices, and particularly hip joint prostheses, containing the acetabular shell liner having a variable rim surface geometry are also provided.

Abstract: An acetabular cup assembly for a prosthetic hip joint is disclosed. This assembly includes an outer shell having at least one shell extension, an adaptor having at least one adaptor extension, and an insert. The inclusion of an extension on the outer shell and an extension on the adaptor allows for easier manipulation and implantation of the assembly.

Abstract: A composition, a medical implant constructed from the composition, and a method of making the composition are described. The composition is a composite material, comprising a porous, reticulated, open cell network having at least part of its surface coated with blue-black or black oxidized zirconium.

Abstract: An acetabular implant for hip replacement surgery includes a shell component and first and second alternative bearing components interchangeably engageable with the shell component to provide a choice in bearing materials. The shell component has an engagement mechanism suitable for locking engagement with the first alternative shell component. A conversion ring is lockingly engageable with the shell component to adapt the shell component to provide an engagement mechanism suitable for locking engagement with the second alternative shell component.

Abstract: A hip socket for use in a hip joint prosthesis comprising a shaft on which a ball head may be fixed, the ball head may be rotatably inserted in a socket insert and the socket insert may be inserted and fixed in the hip socket the shaft and the hip socket being implantable in the thigh bone and the pelvic bone respectively. Damages to the socket insert and/or limitation of the function of the sliding pair of ball head/socket insert may be avoided by local reduction of the calotte diameter of the socket insert, such that the hip socket has an asymmetrical design with regard to the stiffness and/or geometry thereof in two different directions (x, y) orthogonal to each other and to the symmetry axis (z) of the hip socket.

Abstract: A socket or socket insert for a hip joint prosthesis, the shaft of which can be coupled with a ball head which in turn can be inserted in a rotatable manner in the hemispherical recess of the socket insert wherein the shaft can be implanted in the femur and the socket insert can be implanted directly or via a hip socket in the pelvic bone. To avoid squeaking, the socket and/or the socket insert are asymmetrically in their inner or outer geometries.

Abstract: An orthopedic prosthesis for implantation into a bone of a patient includes a porous metal shell adapted to be affixed within the bone. The porous metal shell includes an outer surface adapted to receive bone ingrowth and an inner surface adapted to engage a liner. The porous metal shell is porous from the outer surface to the inner surface. A non-porous member may be affixed to the porous metal shell. The non-porous member may include a piercing member extending from the outer surface, the piercing member adapted to penetrate the bone in an implanted position. The non-porous member may include spikes or fins. In one example, the piercing member may define a reduced material cross section at an interface with the outer surface of the porous metal shell. The piercing member may be adapted to be broken at the reduced material cross section and removed from the porous metal shell.

Abstract: An acetabular cup prosthesis having a shell component, a liner component located within the shell component and a filling means located in a space between the shell component and the liner component.

Abstract: An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.

Abstract: A modular hip implant is disclosed that includes a base member that is to be attached to a pelvic bone, and a cup for accommodating a hip joint prosthesis. The base member is provided with fasteners for mounting the base member on the pelvic bone as well as a concave accommodation portion for the cup. The cup has a convex outer shape which is complementary to the accommodation portion such that the radii of curvature determining the concave accommodation portion and the convex outer form essentially correspond to each other and the cup can be attached within the base member. The base member and/or the cup include adjustment means for adjusting the position of the cup relative to the base member. The invention allows the inclination and anteversion to be adjusted by arranging the cup in the base.

Abstract: A preassembled acetabular cup prosthesis comprising an outer shell and a liner located within the shell.

Abstract: A preassembled acetabular cup prosthesis comprising an outer shell and a ceramic liner located within the shell, said preassembled unit having been assembled ex-vivo under a controlled force selected to optimise the pre-stressing of the components of the prosthesis.

Abstract: A device for use in surgical procedures involving arthroplasty, the device including a bearing member at least partially receivable within a bone engaging member and a liner positioned at least partially between said bearing member and said bone engaging member.

Abstract: Prosthetic hip stems and acetabular cups for use in prosthetic hip joints. The hip stem may include a core having a stem portion and a neck portion, a polymer matrix layer substantially covering the stem portion of the core, and a porous metal layer substantially covering the polymer matrix layer. The polymer matrix layer connects the core and the porous metal layer and provides a stiffness for the hip stem which more closely mimics the stiffness of bone than do known hip stems. The hip stems and acetabular cups additionally include a number of improvements adapted for more optimized results with certain types of patient anatomy, such as the anatomy of female patients, for example.

Abstract: A trial implant kit includes a plurality of intermediate components and a plurality of inner components. Each of the plurality of intermediate components has a uniform inner surface, although at least two of the plurality of intermediate components having distinct outer surfaces. Each of the distinct outer surfaces is configured to engage one of a plurality of acetabular shell component geometries. Each of the plurality of inner components has a uniform outer surface portion and a bearing surface, the uniform outer surface portion configured to be received by the uniform inner surface of any of plurality of intermediate components. The bearing surface is configured to engage a femoral head. At least two of plurality of inner components having distinct bearing surface configurations.

Abstract: The present invention provides monopolar acetabular liners that can enclose a femoral head to form a hip replacement prosthesis, wherein the liner has a rim that creates an orifice, wherein the orifice has a diameter that is smaller than the diameter of the femoral head, and wherein the liner encompasses greater than 50 percent of the volume of the head, wherein a constraining ring can be used in conjunction with the monopolar constrained acetabular liner to provide additional support for the femoral head to stay with the acetabular liner and avoid dislocation. Assemblies, complete prosthetic replacements, and methods of replacing also are provided. Liners and constraining rings having no, one or more recesses also are provided.

Abstract: An acetabular shell liner having a variable rim surface geometry, which improves range of motion of the femoral component within the liner and decreases the incidence of dislocation and subluxation, and methods of making and using the acetabular shell liner. Prosthetic devices, more particularly hip joint prostheses, containing the acetabular shell liner having a variable rim surface geometry are also provided.

Abstract: A prosthetic acetabular component for a hip joint that is inserted into a bone cavity of the natural acetabulum. The acetabular component consists of an articulating component and a constraining component. The articulating component has a hemispherical or dome shape that defines a hemispherical cavity for receiving a femoral ball of a femoral hip stem. The constraining component has a body that connects to the articulating component to capture the femoral ball within the cavity of the articulating component. A locking mechanism connects the constraining component to the articulating component.

Abstract: Methods, systems and devices related to prosthetic implants, including a device for preventing prosthetic components from separating from each other, and more specifically to an assembly for adapting a prosthetic component to receive a device for preventing an implant stem head from dislocating from a prosthetic component. Methods, systems and devices according to this invention seek to provide improved orthopedic prosthetic components and more specifically, improved constrained components that may be utilized with existing implanted prosthetic components. Liner assemblies and systems according to various embodiments of this invention may include an adapter component designed to link current prosthetic cup geometry to a constrained liner, while providing optimal range of motion and sufficient lever out.