An implant including a housing having a peripheral frame including an inner edge defining central opening in a central portion of the implant. The implant may also include a blade located within the central opening, the blade having a retracted position in the housing and an extended position where the blade extends outwardly from the housing. In addition, the implant may include a blade actuating component comprising a driven shaft portion and a blade engaging portion. The blade actuating component may be configured to be translated to move the blade between the retracted position and the extended position. Also, the inner edge of the peripheral frame may include a posterior edge configured to support the blade in two locations.

Disclosed herein are methods and devices for repairing a knee joint, including customizable and/or highly selectable implants and/or implant components for each patient to provide optimal fit and function.

A methodology for grafting together adjacent bony structures is provided using an implant device having an endplate with an inner disc portion and outer ring portion spaced from the inner disc portion by a connecting wall disposed there between. An endplate interior surface includes a retaining structure for securing the endplate to one of the bony structures, and endplate an exterior surface has an integrally formed socket. A ball-joint rod has a longitudinally extending body and an end, and at least a portion of the ball-joint rod end is curvilinear in shape. The curvilinear ball-joint rod end is rotatably disposed in the endplate socket to fixedly interconnect the bony structures.

Systems and tools for inserting and securing an implant within the intervertebral space. An intervertebral disc implant with upper and lower bearing members with an articulation interface between the members for providing relative motion therebetween. The implant may be provided with various securing members for fixing the implant within the intervertebral space. A tool may be used to insert the implant, which includes a plurality of shiftable implant engaging members that are shiftable between non-engaging and engaging configurations to alternatively release or hold the implant.

Implants include fixation features which slidingly receive fixation elements. The fixation features may be negative or positive features, such as undercut channels or posts. Examples include unicompartmental tibial trays having a ridge protruding from the bone-facing side, an undercut channel formed within the ridge. Instruments are disclosed for preparing a ridge-receiving feature in bone.

An intervertebral implant including a non-linear bone contacting outer member having an elongate geometry. The implant further includes a support member having an elongate geometry, wherein the support member is attached to the outer member. In addition, the outer member has a bone contacting outer surface configured to contact a vertebra, wherein the geometry of the outer member provides a first distal surface region, a first proximal surface region, and a second distal surface region, wherein the first distal surface region, the first proximal surface region, and the second distal surface region are all oriented outwardly on a superior side or an inferior side of the implant, wherein the support member attaches to the outer member at a portion of the outer member that includes the first proximal surface region.

An intervertebral implant component of an intervertebral implant includes an outer surface for engaging an adjacent vertebra and an inner surface. A keel extends from the outer surface and is designed to be disposed in a slot provided in the adjacent vertebra. This keel extends in a plane which is non-perpendicular to the outer surface; and preferably there are two of the keels extending from the outer surface which are preferably offset laterally from one another. In another embodiment, an anterior shelf is provided at an anterior end of the outer surface, and this anterior shelf extends vertically away from the inner surface in order to help prevent bone growth from the adjacent vertebra towards the inner surface. Further in accordance with disclosed embodiments, various materials, shapes and forms of construction of the component and/or keel provide various benefits.

A spinal implant adapted to be positioned within a disc space between adjacent vertebrae includes a first intradiscal element, a second intradiscal element, and a coupling mechanism. The first and second intradiscal elements include respective first and second outer surfaces adapted to be positioned adjacent an endplate of respective first and second adjacent vertebrae. The first and second intradiscal elements further include respective first and second medial surfaces that are opposite the respective first and second outer surfaces, where the second medial surface is adapted to generally face the first medial surface upon assembly of the first intradiscal element with the second intradiscal element. The coupling mechanism is associated with the first and second medial surfaces and is adapted to provide relative rotational movement between the first and second intradiscal elements in a plane generally parallel with the first and second medial surfaces.

An implant for use in a spine includes a body and a plurality of structural members. The plurality of structural members includes outer members that are arranged to contact a vertebra upon implantation and support members that provide reinforcement and stability to the outer members. The outer members may have sections with a generalized helical geometry. The generalized helical geometry provides distal and proximal outwardly facing surface regions and creates a series of protected fusion zones along the superior and inferior surfaces of the implant to foster adjacent bone growth.

An implant is described for use in the spine, including two blades attached to a blade actuating member. Each blade includes a protruding portion that engages a corresponding channel in the blade actuating member. The blade or blades are extended or retracted when the blade actuating member is translated along a first axis. Each blade is retained in channels within the blade actuating member, and channels within the body of the implant, that constrain each blade to move in a direction near perpendicular to the direction of motion of the blade actuating member.