A spine implant for a TLIF surgical procedure is configured to be guided into place during implantation in conjunction with a complementary insertion instrument. The cage of the implant is constrained to a limited range of rotation about a pivoting post carried by the cage. The insertion instrument is configured to hold the post while controllably rotating the cage relative to the post in order to angularly position the implant during implantation. Range of rotational motion is controlled by the configuration of an opening in and end of the cage and a groove in the pivot post. A retaining pin of the implant extends from the cage into the groove of the post to rotationally connect the cage to the post.

A placeholder for vertebrae or vertebral discs includes a tubular body, which along its jacket surface has a plurality of breakthroughs or openings for over-growth with adjacent tissue. The placeholder includes at least a second tubular body provided with a plurality of breakthroughs and openings at least partially inside the first tubular body. The first and second tubular bodies can have different cross-sectional shapes, can be are arranged inside one another by press fit or force fit or can be connected to each other via connecting pins and arranged side by side to one another in the first body.

The present disclosure is directed to an expandable medical implant for the repair of cranium defects in adolescent patients. The implants of the present disclosure can include a plurality of interconnected links that are movable with respect to each other as the underlying cranium grows and expands.

Disclosed is an artificial bone structure for replacement of natural bone and comprising a solid cylindrical portion having an elongate shape. The solid cylindrical portion comprises an auxetic structure of a plurality of artificial osteons and each artificial osteon comprises a first hexagonal unit and a second hexagonal unit having corresponding edges. Furthermore, a first artificial osteon and a second artificial osteon of the plurality of artificial osteons are connected to each other using an edge of a third artificial osteon and about a central axis of each of the first artificial osteon and the second artificial osteon. Moreover, the artificial bone structure comprises a hollow cylindrical portion having an elongate shape, disposed inside of and concentrically with the solid cylindrical portion. The hollow cylindrical portion is configured to comprise an artificial bone marrow therein.

A disc implant device can be provided in a generally planar rectangular sheet having a first elongated side, a second elongated side opposing the first elongated side, a first end, and a second end opposing the first end. The generally planar rectangular sheet is structured with alternating segments of joint ridges, each segment of joint ridges being configured to form a spacing joint segment and alternating segments of arm ridges, each arm segment being configured to form a plurality of radially extending arms, the joint segments providing flexibility to the device. When the disc implant is folded or rolled from its planar configuration to a generally cylindrical configuration, the arm segments are axially collapsible and radially expandable such that in such a configuration, the implant includes segments of radially expanded arms separated by spacing joint segments.

A vertebral facet distractor includes an elongated generally cylindrical contour including a first end surface, a second end surface, an outer sidewall, an inner sidewall, and a central lumen having an opening in one of the first end surface and the second end surface. The outer sidewall may be provided with a surface irregularity, such as a screw thread. The vertebral facet distractor may further include a holder including an elongated body and a tip that extends through the opening and is engaged with the contour. The tip may be provided with a screw thread that is engaged with the contour or may engage the contour in an interference fit.

The biocompatible lattice structures disclosed herein with an increased or optimized lucency are prepared according to multiple methods of design disclosed herein. The methods allow for the design of a metallic material with sufficient strength for use in an implant and that remains radiolucent for x-ray imaging.

Provided is a method for converting a modular anatomic shoulder implant to a modular reverse shoulder implant, wherein the modular anatomic shoulder implant and the modular reverse shoulder implant have novel configurations.

A joint replacement system for repairing an articular surface of a first bone of a joint includes an anchor portion and an implant portion. The anchor portion includes an anchor to be secured to the bone, and an anchor fixation head including a bone-facing surface (BFS) extending radially outward from the anchor and an implant facing surface (IFS) extending from a periphery of the BFS. The implant portion is formed from a material (e.g., CoCr) more dense than the material of the anchor portion (e.g., Ti) and includes a fixation cavity to receive at least a portion of the anchor fixation head (AFH), the fixation cavity includes an anchor facing surface (AFS) configured to form a frictional connection with the IFS, and a load bearing surface having a contour for articulating against a cooperating articulating surface of a second bone of the joint.

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an internal chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by an integral porous structure.