Orthopedic implants constructs include one or two rigid monolithic plates and a core that is integrally formed within an interior space within a rigid monolithic plate. An exemplary construct that includes two plates between which is a core that is interengaged with each plate, the two plates thereby forming a generally disc-like shaped construct with opposing tissue contacting surfaces. The constructs are suitable, for example for spinal interbody fusion and artificial disc applications.

An expandable intervertebral fusion cage is independently expandable vertically and laterally. The fusion cage includes a cage body that can receive an expansion member that causes the fusion cage to expand vertically. The cage body is responsive to a compressive force to move to an expanded lateral position, whereby the fusion cage defines a substantially circular annular profile.

A graft collar includes a body of cylindrical shape, including an upper surface and a spaced apart lower surface defining an outer wall and surface therebetween; an engagement section located on the upper surface of the body sized and shaped to engage a head of a bone fastener; an through hole extending axially through the body between the upper surface and the lower surface thereof, the through hole being sized to receive therethrough an elongate threaded shank extending from the head of the bone fastener, where the graft collar is formed from at least one of soft cadaveric allograft, hard cadaveric allograft, and synthetic bone void fillers.

An intervertebral cage includes a plurality of segments that are connected together by one or more members formed from a shape memory alloy material such that the segments are automatically moved from an initial orientation before implantation/insertion in an intervertebral space to an expanded orientation after implantation/insertion in the intervertebral space. Each of the plurality of segments may have a plurality of passageways or recesses formed therethrough, and wherein a wire formed from a shape memory alloy material extends through each of the plurality of passageways or recesses. The member may be formed from a shape memory alloy material that demonstrates shape memory effects and superelasticity properties, such as nitinol.

Embodiments of the present invention are directed to microscale and millimeter scale tissue scaffolding structures that may be static or expandable and which may be formed of biocompatible metals or other materials that may be coated to become biocompatible. Scaffold structures may include features for holding desired biological or physiological materials to enhance selected tissue growth. Scaffolding devices may be formed by multi-layer, multi-material electrochemical fabrication methods.

A graft collar includes a body of cylindrical shape, including an upper surface and a spaced apart lower surface defining an outer wall and surface therebetween; an engagement section located on the upper surface of the body sized and shaped to engage a head of a bone fastener; an through hole extending axially through the body between the upper surface and the lower surface thereof, the through hole being sized to receive therethrough an elongate threaded shank extending from the head of the bone fastener, where the graft collar is formed from at least one of soft cadaveric allograft, hard cadaveric allograft, and synthetic bone void fillers.

Bone implants, including methods of use and assembly. The bone implants, which are optionally composite implants, generally include a distal anchoring region and a growth region that is proximal to the distal anchoring region. The distal anchoring region can have one or more distal surface features that adapt the distal anchoring region for anchoring into iliac bone. The growth region can have one or more growth features that adapt the growth region to facilitate at least one of bony on-growth, in-growth, or through-growth. The implants may be positioned along a posterior sacral alar-iliac (SAI) trajectory. The implants may be coupled to one or more bone stabilizing constructs, such as rod elements thereof.

The present invention generally relates to bone implants. More specifically, the present invention relates to bone implants used for the fixation and or fusion of the sacroiliac joint and/or the spine. For example, a system for fusing and or stabilizing a plurality of bones is provided. The system includes an implant structure having a shank portion, a body portion and a head portion. The body portion is coupled to the shank portion and is configured to be placed through a first bone segment, across a bone joint or fracture and into a second bone segment. The body portion is configured to allow for bony on-growth, ingrowth and through-growth. The head portion is coupled to the proximal end of the shank portion and is configured to couple the shank portion to a stabilizing rod. Methods of use are also disclosed.

Particular aspects provide novel devices for bone tissue engineering, comprising a metal or metal-based composite member/material comprising an interior macroporous structure in which porosity may vary from 0-90% (v), the member comprising a surface region having a surface pore size, porosity, and composition designed to encourage cell growth and adhesion thereon, to provide a device suitable for bone tissue engineering in a recipient subject. In certain aspects, the device further comprises a gradient of pore size, porosity, and material composition extending from the surface region throughout the interior of the device, wherein the gradient transition is continuous, discontinuous or seamless and the growth of cells extending from the surface region inward is promoted.

Provided is a spinal implant having a unit structure printed by using a 3D printer, which is inserted between a vertebra and an adjacent vertebra and in which unit bodies constituted by at least one or more circular rings are repeated with a certain pattern. The spinal implant may implement elastic force like the existing vertebrae while bone fusion is performed as well as a state in which the bone fusion is completed after a procedure to obtain superior procedure results.