A provisional prosthetic system that replicates the characteristics of a corresponding, nonprovisional femoral prosthesis. The provisional prosthetic system may include a frame component and a shell component. The frame component of the provisional prosthetic system may be configured to be attached directly to a resected femur. In one exemplary embodiment, the frame component is impacted onto the resected femur to firmly seat therewith. Once the frame component is secured to the resected femur, a shell component of the provisional prosthetic system may be positioned on and secured to the frame component. In one exemplary embodiment, the frame component is made from a metallic material. This allows for the frame component to maintain the rigidity necessary to facilitate proper trialing. In another exemplary embodiment, the shell component is a plastic.

A prosthetic total knee replacement system comprises a distal femoral implant component, a tibial tray implant component and a fixed bearing tibial tray insert. The fixed bearing tibial tray insert is fixed to the tibial tray and articulates with the distal femoral implant component. The fixed bearing tibial tray insert component has a medial-lateral centerline and a stabilizing post. The stabilizing post has a medial-lateral centerline offset laterally from the medial-lateral centerline of the fixed bearing tibial tray insert.

An improved polymer orthopedic implant and a method for making the same, where a portion of the implant for engagement with a patient's bone has a rough texture for encouraging micro-ingrowth between the bone and the implant. Substantially all remaining non-bone engaging portions of the implant are smooth for discouraging tissue ingrowth with the implant. The non-bone engaging portions of the implant are polished smooth, and are preferably transparent or translucent. The implant may be comprised of a slow reacting polymethylmethacrylate acrylic.

Disclosed is a spinal complex cage, which includes a cage which is made of a polymeric material, and metal covers which are formed on upper and lower portions of the cage, respectively, in which couplers formed on the metal covers are coupled to coupling grooves formed in the cage, such that the metal covers are detachably coupled to the upper and lower portions of the cage. Accordingly, because the cage and the metal cover are detachably coupled to each other, the manufacturing method is simple, and the metal cover is easily coupled to or separated from the cage, such that the spinal complex cage may be variously and quickly applied even during the surgery in accordance with shapes or intervals between the vertebral bodies, and as a result, a spinal fusion rate is excellent, and the accurate and precise surgical operation is enabled.

A system for spinal surgery includes a prosthesis comprising a plurality of bone anchors which engage an intervertebral construct for fusion or motion preservation. The fusion construct comprises a spacer optionally encircled by a jacket. The motion preservation construct may comprise an articulating disc assembly or an elastomeric disc assembly. Any of the constructs may occupy the intervertebral disc space between adjacent vertebrae after removal of an intervertebral disc. The anchors slidingly engage the construct to securely fix the prosthesis to the vertebrae. The anchors and jacket of the fusion construct provide a continuous load path across opposite sides of the prosthesis so as to resist antagonistic motions of the spine.

Provided herein is technology relating to materials having microscale and/or nanoscale features and particularly, but not exclusively, to porous materials comprising microscale features, methods for producing porous materials comprising microscale features, drug delivery vehicles, and related kits, systems, and uses.

Provided herein are anchors and interbodies for interbody fusion, comprising an interbody for insertion between vertebrae of a human spine, comprising an interbody cage comprising a plurality of anchor receptacles, each anchor receptacle configured to receive an anchor to secure the interbody to a vertebra; and the anchor, comprising a head configured to engage one of the plurality of anchor receptacles; a curved partial-tubular shank connected to or integral with the head at a proximal end of the curved partial-tubular shank, extending from the head, and comprising a plurality of concentric grooves on an exterior surface of the curved partial-tubular shank; and a straight tapered tip portion at a distal end of the curved partial-tubular shank and extending from the curved partial-tubular shank.

A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature below a melting point of the polymer and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.

A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature below a melting point of the polymer and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.

A method for making a polymer with a porous layer from a solid piece of polymer is disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature below a melting point of the polymer and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.