A joint prosthesis assembly includes a stem that includes a first end, a second end, and a length that extends between the first and second ends. The stem includes a cylindrical opening that extends into the second end along a portion of the length and terminates within the stem so as to form a base surface that defines an end of the cylindrical opening. The assembly also includes a joint component that has an articular side, a bone contact side, and a cylindrical boss that extends from the bone contact side. The boss is slidingly receivable within the cylindrical opening so that, when the stem and joint component are implanted, the stem is unconstrained in an axial direction and constrained by the stem in a direction transverse to the axial direction.

A bone implant holding and shaping tray is provided. The tray includes a first segment having a distal end and a first surface sized to hold and shape at least a portion of the bone implant with bone material. The tray includes a second segment having a second surface sized to hold and shape at least a portion of the bone implant with bone material, the second segment having a proximal end configured to be coupled to the distal end of the first segment so as to extend the first surface to hold and shape the bone implant. Methods of making and using the bone implant holding and shaping tray are also provided.

The biocompatible lattice structures and implants disclosed herein have an increased or optimized lucency, even when constructed from a metallic material. The lattice structures can also provide an increased or optimized lucency in a material that is not generally considered to be radiolucent. Lucency can include disparity, maximum variation in lucency properties across a structure, or dispersion, minimum variation in lucency properties across a structure. The implants and lattice structures disclosed herein may be optimized for disparity or dispersion in any desired direction. A desired direction with respect to lucency can include the anticipated x-ray viewing direction of an implant in the expected implantation orientation.

Modular bone reinforcement systems, bone plates, assembled bone reinforcements, and methods of reinforcing a bone are described. A modular bone reinforcement system includes a plurality of bone plates, each of which has a series of tabs disposed along at least one edge of the bone plate for forming a snap-fit attachment to a mating series of tabs of another bone plate of the plurality of bone plates to form an assembled bone reinforcement. A first bone plate of the plurality of bone plates has a first shape and a second bone plate of the plurality of bone plates has a second shape that is different from the first shape. The modular bone reinforcement system can include additional components, such one or more fixation devices, reduction devices, navigation aids, or other components.

The three-dimensional lattice structures disclosed herein have applications including use in medical implants, Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing In some examples, the lattice can be configured as a scaffold to support bone or tissue growth Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. The lattice structures are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

A multi-function device useful in a surgical procedure for implanting a cartilage repairing implant in a bone is disclosed. The device includes a plurality of bone defect sizing rings or discs, where each bone defect sizing ring/disc includes a portion that is used to determine the size that correlates to the perimeter shape and size of the cartilage repairing implant. The inventive device also includes a feature that can be used to gauge the proudness of the cartilage repairing implant after the implant has been implanted into a bone.

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 implant system comprises an implant plate adapted to be positioned on a surface of a resected bone. The implant plate has a plurality of openings. A plurality of independently positionable pegs attach the implant plate to the bone. Each peg has a longitudinal axis and comprises: a peg body and a retaining device. The peg body is inserted into a peg hole in the bone. The peg body has a transverse dimension in a direction normal to the longitudinal axis, the transverse dimension larger than the openings of the plate. The retaining device is separate from the peg body, and is configured to attach to the peg body, with at least a first portion of the retaining device positioned above an upper surface of the implant plate, and a connecting portion of the retaining device extending through one of the openings of the implant plate.

A prosthesis for spinal surgery includes a spacer adapted to be secured into the bone and attached to one of a plurality of configuration plates. The configuration plates are interchangeable and each one is configured to utilize a different combination of bone screws, anchors or both. The prosthesis may further include a retaining mechanism to prevent bone screws and/or anchors from backing out.

A glenoid component for securement to a glenoid surface of a scapula comprises a body portion having a first surface adapted to contact the glenoid surface of a scapula and a second surface configured to receive the head portion of a humerus. The glenoid component further includes an anchor peg for penetrating the glenoid surface of the scapula so as to secure the body portion to the glenoid surface of the scapula. The anchor peg includes a cylindrical shaft extending from the first surface of the body portion and a fin secured to and extending outwardly from the cylindrical shaft. The glenoid component further includes a feature that prevents rotation of the glenoid component.