A trial orthopedic implant having a plurality of bearing component augments of differing heights, where each augment releasably, slidably connected to the trial implant.

A partial hip prosthesis for reducing friction and wear in partial hip prosthesis by combining optimized geometry of the articulation and surface treatment of the prosthetic component. In the prosthesis, one of the articulating surfaces—either that of the reamed acetabulum, or that of the femoral head prosthesis is a-spherical so that a fluid-filled gap is formed at the area of major load transfer. The fluid-filled gap is sealed by an annular area of contact, over which the concave and the convex components are congruent. A prosthetic head is fixed to the femur by either a conventional stem, a perforated shell, or a femoral neck prosthesis screwed onto the femur so that it is partially covered by bone and partially exposed on the medial-inferior aspect, where it abuts the reamed cortex of the calcar region.

The invention relates to a prosthesis for implantation into a living body in the form of a magnetic artificial joint, in particular an artificial shoulder joint, comprising: a) a first prosthesis member comprising a socket member, b) a second prosthesis member comprising a head member, c) one of the socket member and the head member is at least partially composed as a permanent magnet and the other one of the socket member and the head member is at least partially composed of a magnetic material, or the socket member and the head member are both at least partially composed as a permanent magnet, d) the socket member comprises a recess on a surface side to be coupled with the head member, the recess comprising a concavely contoured contact surface, e) the head member comprises a projection on a surface side to be coupled with the socket member, the projection comprising a convexly contoured contact surface, f) the convexly contoured contact surface is adapted to the concavely contoured contact surface, such that the head member can be coupled in a rotatably jointed manner to the socket member in the nature of a ball/ball-socket joint, g) wherein the convexly contoured contact surface can perform a generally slip-fee rolling motion or a combined slipping and rolling motion on the concavely contoured contact surface in reaction to a change of an angle between the first and the second prosthesis member, and the convexly contoured contact surface can be shifted across the concavely contoured contact surface within a shifting area.

A prosthetic ankle includes a tibial portion likely to be connected to the lower end of a tibia, a talus portion likely to be connected to a talus, and a pad inserted between the tibial portion and the talus portion. The tibial portion includes an articular surface likely to engage with a contact surface of the pad. The talus portion includes a curved articular surface likely to engage with a contact surface of the pad. The articular surface of the tibial portion is curved, concave and includes a flat section forming an extension to the rear of said articular surface.

A device, for example a medical implant, and a method of making the same, the device having a metal or metal alloy substrate, for example cobalt chrome, and a diffusion hardened metallic surface, for example a plasma carburized surface, contacting a non-diffusion hardened surface or a diffusion hardened surface having a diffusion hardening species different from that of the opposing surface.

Photodynamic devices for replacement of an articular head of a bone are provided. In an embodiment, a photodynamic device includes a photodynamic support member and an articular member attachable, either fixedly or removably, to the photodynamic support member and having a bearing surface. In an embodiment, the articular member includes a recess designed to receive the photodynamic support member. In an embodiment, the photodynamic support member includes an opening into which a shaft of the articular member can be inserted to attach the articular member to the photodynamic support member.

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.

A system for dilating tissue includes a retractor having a pair of retractor blades that are movable towards and away from each other to retract tissue of a patient. The retractor blades have longitudinal guide channels. A first pin is attachable to a first vertebra. The system also includes an interbody spacer insertion device that has a guide channel for slidably engaging the longitudinal channel guide and is releasably attachable to an interbody spacer. The interbody spacer insertion device is configured to guide the interbody spacer into a space between adjacent vertebrae. A method for using the system includes advancing the retractor blades towards first and second vertebrae. The first retractor blade is attached to the first vertebra using the first pin and the retractor blades are moved away from each other. The interbody spacer insertion device is translated towards the vertebrae to position the interbody spacer between the vertebrae.

Photodynamic devices for replacement of an articular head of a bone are provided. In an embodiment, a photodynamic device includes a photodynamic support member and an articular member attachable, either fixedly or removably, to the photodynamic support member and having a bearing surface. In an embodiment, the articular member includes a recess designed to receive the photodynamic support member. In an embodiment, the photodynamic support member includes an opening into which a shaft of the articular member can be inserted to attach the articular member to the photodynamic support member.

The present invention discloses the zonal trabecular femoral condylar component containing zirconium-niobium alloy on oxidation layer and its preparation method. The preparation method is as follows: using zirconium-niobium alloy powder as a raw material, conducting a 3D printing for one-piece molding, and obtaining intermediate products of the zonal trabecular femoral condylar component containing zirconium-niobium alloy on oxidation layer, after Sinter-HIP, cryogenic cooling and surface oxidation, the zonal trabecular femoral condylar component containing zirconium-niobium alloy on oxidation layer is prepared. Partial of the zonal trabecular femoral condylar component containing zirconium-niobium alloy on oxidation layer is provided with Zonal trabecula. The present invention achieves that the micro-strain in most areas of the bone tissue on the femoral condylar component is between the minimum effective strain threshold and the super-physiological strain threshold, which is conducive to bone ingrowth, thereby improving long-term stability.