A tibial-tray system may include a tibial tray and a spline configured to extend proximally from the tibial tray and guide a femoral component of a knee system. The tibial-tray system may also include an adapter configured for attachment to the tibial tray and the spline. A distal end of the adapter may have a position relative to a position of a proximal end of the adapter such that the spline extends upward from the tibial tray at a predetermined position.

Intervertebral implants for implanting into an intervertebral space are provided. The implants can comprise one or more layers that are operably attached to one another. An implant can comprise a first layer having a first mating surface that mates with a second mating surface of a second layer. The first mating surface and the second mating surface can have features that allow them to complement each other. The implants can include one or more bore holes for receiving a fixation member. The bore holes can be horizontal, vertical or diagonal. In some cases, the bore holes will be blind bore holes.

A component of an artificial joint according to an exemplary aspect of the present disclosure includes, inter alia, a hollow tube including bone ingrowth material. Further, the hollow tube is selectively expandable. The bone ingrowth material allows the component to become biologically fixed to adjacent bone. Further, expansion of the hollow tube increases friction between the hollow tube and the adjacent bone, which increases stability.

Provided is a glenoid implant system that includes a tray component that includes a bone-facing surface and a bearing-facing surface on opposite side of the bone-facing surface; and a bearing component that includes an articulating surface that is generally concave and a back side on opposite side of the articulating surface that is generally convex, wherein the articulating surface is configured for engaging a convex humeral head and the back side is configured for engaging the bearing-facing surface of the tray component thus enabling the bearing component to slide about on the tray component while the convex humeral head articulates against the articulating surface.

A spinal implant apparatus that is an expandable spacer including features to minimize or eliminate spacer cant or offset during and after completing the expansion process. The spacer includes a top component, a base component in engagement with the top component, and an expansion mechanism arranged to change the top component's position with respect to the base component. The mechanism for causing expansion may be a screw, a cam, a wedge or other form of distracting device. In one embodiment, the expandable spacer includes a base component with a set of towers and a top component with a set of corresponding silos, where the towers and silos are configured to minimize or eliminate tilt of the top component as it extends upwardly from the base component.

The present invention relates to an anchoring system for attaching a prosthesis to a human body, comprising: an anchoring element, an abutment, an abutment screw for attaching the abutment to the anchoring element, the anchoring element comprises a connection area for the abutment, the connection area comprising a press-fit portion such that the abutment is attached to the anchoring element in the connection area by a press-fit connection, wherein the connection area comprises an anti-rotation geometry and the abutment comprising a corresponding mating anti-rotation geometry proximal to the press-fit portion, and where in the connection area comprises a conical portion proximal to the anti-rotational geometry forming a mating geometry for a corresponding conical portion in the through-hole of the abutment.

Systems and methods to evaluate a joint implant device are provided. The joint implant device can include a prosthesis body having a first end and a second end. The first end can couple with a first joint component and the second end can couple with a second joint component. The prosthesis body can include a first support. The prosthesis body can include a first gear rotatably coupled with the first support. The prosthesis body can include a second support movably coupled with the first support. The second support can include a second gear that can engage with a portion of the first gear. The prosthesis body can include a third support. The third support can movably couple with the second support. The third support can move relative to the first support with activation of the first gear.

A hybrid spinal implant for performing an intervertebral fusion procedure can include a pair of spacers separated by an expandable container that are formed of a porous titanium scaffold material. A connecting rod can span longitudinally between the pair of spacers. The spacers can be formed of titanium or PEEK, with endplates that are formed of the porous titanium scaffold material. The endplates can be bioactive. Exposed surfaces of the porous titanium scaffold material can be coated in a snag-preventing substance. The expandable container can be formed of a mesh material.

Various systems and methods are disclosed for joining multiple components of a prosthesis. For example, a system includes a first component having a body extending from a first end to a second end. Each of the first and second ends including a coupling element. At least one end including a male coupling element including a detent disposed within a hole defined by a protrusion, the detent being biased by a biasing member. A method includes coupling a first component to a second component. Coupling the first component to the second component includes aligning a female engagement element provided by the first component with a male coupling component provided by the second component and inserting the male coupling element into the female coupling element.

The present invention relates to a prosthesis, such as a megaprosthesis, for a joint replacement or any segmental bone deficit. In particular, the present invention relates to a stem for a prosthesis having threads on at least part of an outer surface thereof. A prosthesis, such as a megaprothesis, is also provided. The prosthesis contains the threaded stem and a modular body engaged to the stem. The modular body contains a bone replace segment or a replacement joint, such as replacement knee joint, hip joint, shoulder joint, wrist joint, ankle joint, elbow joint, joints of the hand, joints of the foot, etc.