A method of implanting an artificial disc replacement device may include removing a natural spinal disc from between vertebrae, thereby forming a disc space between the first vertebra and the second vertebra and inserting a first endplate and a second endplate of the artificial disc replacement device into the disc space. Further, the method may include using a distraction tool to distract the first endplate and the second endplate in order to seat the first endplate against the first vertebrae and to seat the second endplate against the second vertebrae and performing an x-ray to evaluate the placement of the first endplate and the second endplate within the disc space. The method may include using the distraction tool to unseat the first endplate from the first vertebra and to unseat the second endplate from the second vertebra and repositioning the first endplate or the second endplate within the disc space.

An artificial disc replacement device is disclosed. The device includes an upper endplate and a lower endplate, as well as a core assembly disposed between the endplates. The core assembly includes a core member with a curved engaging surface and a matrix member. The matrix member is more compressible than the core member. The curved engaging surface of the core member engages a recess in the upper endplate so that the upper endplate can translate along the curved engaging surface. The curved engaging surface has a greater curvature at its posterior end than at its anterior end to facilitate different ranges of motion during extension and flexion.

Shoulder arthroplasty systems and configurations for components thereof are described. For example, implant systems for a total should arthroplasty (TSA), hemi shoulder arthroplasty, and reverse should arthroplasty (RSA) are described. In addition, exemplary configurations for baseplates, glenoid components, glenosphere components, humeral components, humeral head components, humerosocket components, connectors, and adaptors, are described.

A toe joint prosthesis and a fabrication method thereof are provided. The toe joint prosthesis includes a first bone nail prosthesis and a second bone nail prosthesis hinged with the first bone nail prosthesis, the first bone nail prosthesis includes a first bone nail configured to be provided in a bone marrow cavity and a second bone nail connected with the first bone nail and located outside the bone marrow cavity, and the second bone nail is hinged with the second bone nail prosthesis. In particular, a three-dimensional porous structure layer is formed on an outer surface of the first bone nail and/or the second bone nail and/or the second bone nail prosthesis. An outer surface of the toe joint prosthesis are endowed with better bone ingrowth ability and bone crawling ability, thereby making the fixation of the toe joint prosthesis more stable.

A prosthetic intervertebral disc joint assembly for replacing at least a portion of an intervertebral disc between first and second adjacent vertebrae. A first component has an intervertebral portion insertable between adjacent vertebrae, with a bone-engaging side and a convex articulating inner side opposite the bone-engaging side. A second component engages the second vertebra and has a concave articulating surface. The first and second components each include a fixation portion for securing the component to the anterior side of the respective vertebra.

The present invention relates to an articular joint replacement system. The system has first and second components. Each component has a tapered head piece for covering the end of a bone and for acting as an articular surface, an integrally formed screw stem having a length sufficient to extend into the medullary canal, and inwardly angled bone grips affixed to the underside of the head piece to allow solid fixation to the bone by compression press fit. The head piece of the first component is provided with a shaped exterior surface which complements the shaped exterior surface of the head piece of the second component and which allows motion in three planes.

The present invention relates to an articular joint replacement system. The system has first and second components. Each component has a tapered head piece for covering the end of a bone and for acting as an articular surface, an integrally formed screw stem having a length sufficient to extend into the medullary canal, and inwardly angled bone grips affixed to the underside of the head piece to allow solid fixation to the bone by compression press fit. The head piece of the first component is provided with a shaped exterior surface which complements the shaped exterior surface of the head piece of the second component and which allows motion in three planes.

A distally expanding facet joint implant and delivery device for distally distracting a facet joint. The facet joint implant generally includes an outer part and an inner part. The outer part includes a pair of opposed distally expandable facet plates connected by a hinge. The inner part includes a wedge that is selectively movable against the facet plates to distally expand and contract the facet joint implant into open and closed states. Teeth on the outer part engage indents on the inner part to maintain the facet joint implant in the distally expanded state. The outer and inner parts include outer and inner connectors, and the delivery device includes corresponding outer and inner connectors adapted to be in locked engagement with the outer and inner connectors to hold the implant and selectively cause it to distally expand and contract.

A distally expanding facet joint implant and delivery device for distally distracting a facet joint. The facet joint implant generally includes an outer part and an inner part. The outer part includes a pair of opposed distally expandable facet plates connected by a hinge. The inner part includes a wedge that is selectively movable against the facet plates to distally expand and contract the facet joint implant into open and closed states. Teeth on the outer part engage indents on the inner part to maintain the facet joint implant in the distally expanded state. The outer and inner parts include outer and inner connectors, and the delivery device includes corresponding outer and inner connectors adapted to be in locked engagement with the outer and inner connectors to hold the implant and selectively cause it to distally expand and contract.

The present invention relates to an articular joint replacement system. The system has first and second components. Each component has a tapered head piece for covering the end of a bone and for acting as an articular surface, an integrally formed screw stem having a length sufficient to extend into the medullary canal, and inwardly angled bone grips affixed to the underside of the head piece to allow solid fixation to the bone by compression press fit. The head piece of the first component is provided with a shaped exterior surface which complements the shaped exterior surface of the head piece of the second component and which allows motion in three planes.