A wrist endoprosthesis (2) for functional replacement of the human wrist, containing a radius component (4) that has a shaft (10) for anchoring in the radius, a head (12), and a first joint surface (16), which is implemented on a distal head face (14), and a carpal component (6) that has a proximal carpal face (22), a distal carpal face (20) and a second joint surface (24) which is formed on the proximal carpal face (22) and interacts with the first joint surface (169) of the radius component (4), characterized in that the carpal component (6) is substantially trough-shaped, in order to at least partially surround the carpal bones. Also, a wrist endoprosthesis (2) that has anti-luxation protection (8), a method for producing wrist endoprostheses (2) and a computer program product.

A dynamic intervertebral spacer includes a ring which is split on an anterior portion. A posterior portion of the ring acts as a torsion spring. After implantation, the ring is able to act as a spring between superior and inferior vertebral bodies, thus allowing dynamic bone growth in fusion procedures.

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.

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 (“SAT”) trajectory. The implants may be coupled to one or more bone stabilizing constructs, such as rod elements thereof.

The disclosure provides an articular gasket prosthesis and an articular prosthesis with the articular gasket prosthesis. The articular gasket prosthesis includes an elastic gasket disposed between a first skeleton and second skeleton forming a joint, the elastic gasket including: an elastic matrix, having a first contact surface facing the first skeleton and a second contact surface facing the second skeleton; and multiple synovial fluid passages, distributed in the elastic matrix and communicating the first contact surface and the second contact surface, the multiple synovial fluid passages being disposed according to a predetermined manner to gradually increase hardness of the elastic matrix from a center to an edge and gradually decrease elasticity of the elastic matrix from the center to the edge.

Spinal interbody cages are provided that include a bulk interbody cage, a top face, a bottom face, pillars, and slots. The pillars are for contacting vertebral bodies. The slots are to be occupied by bone of the vertebral bodies and/or by bone of a bone graft. The spinal interbody cage has a Young's modulus of elasticity of at least 3 GPa, and has a ratio of the sum of (i) the volumes of the slots to (ii) the sum of the volumes of the pillars and the volumes of the slots of 0.40:1 to 0.90:1.

A dynamic intervertebral spacer includes a ring which is split on an anterior portion. A posterior portion of the ring acts as a torsion spring. After implantation, the ring is able to act as a spring between superior and inferior vertebral bodies, thus allowing dynamic bone growth in fusion procedures.

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.

An ankle prosthesis comprising a tibial implant, a talar implant and an insert to articulate the implants. The top face of the tibial implant having an anchoring fin, and the bottom face is articulated with the top surface of the insert. The bottom face of the talar implant includes an anchor to the talar bone, and the top face is articulated with the bottom surface of the insert. The articulation surface being saddle-shaped and including a longitudinal central groove allowing the insert to move longitudinally and rotate transversely. The top face of the tibial implant includes, on its anterior edge, a shield covering the bottom anterior portion of the tibia, and the tibial face is inclined and forms an angle with the horizontal of between 15° and 45°. Passages are provided in the shield for bone screws passing through in an ascending manner and open on the inclined tibial face.

A method of joining adjacent bone includes providing a medical device having a first implant portion, a second implant portion attached to the first implant portion, and a driver assembly having an instrument adapted to form an opening in bone. The driver assembly is integrally connected to and removably attached to the second implant portion at a connection, distal from the first implant portion. The driver assembly further has a wire driver extending therefrom, distal from the first implant portion. The method further includes inserting the wire driver into a wire driver tool; placing the first implant portion against a first bone structure; inserting the first implant portion into the first bone structure; removing the second implant portion from the driver assembly; using the driver assembly to form an opening in a second bone structure, adjacent to the first bone structure; and inserting the second implant portion into the opening.