Abstract: Fired magnesium oxide stabilized zirconia ceramic body having a highly smooth, polished or otherwise equivalent surface has, on at least part of the surface, a metal/metal alloy coating. The fired ceramic body can be a magnesium oxide stabilized tetragonally toughened zirconia. The coating can be from a metal or metal alloy other than by tantalum vapor deposition, and can include a titanium metal or alloy. The coating can be a macro coating, up to less than about 0.015 of an inch in thickness. The coated magnesium oxide stabilized zirconia ceramic can be a tool or an orthopedic implant or component for an orthopedic implant, which can be a load bearing implant or component for a load bearing implant having an articular surface and a nonarticular surface where the metal or metal alloy coating is on at least part of the nonarticular surface. Plasma arc spraying under vacuum may be employed.

Abstract: Femoral and/or tibial knee implant component includes a body and an elongate stem. The stem, at least for a substantial portion, has a polygonal shape when taken in cross-section generally perpendicular to its length. Modularity can be provided.

Abstract: Prosthetic knee implant or implant component is made with a magnesium oxide stabilized transformationally toughened zirconia.

Abstract: Fired magnesium oxide stabilized transformation toughened zirconia ceramic can be for or of an implant or implant component of a one-piece unicompartmental knee spacer device; a multi-piece unicompartmental joint aligning device; a temporal mandibular joint cap implant; a vertebra cap; an ankle joint ensemble or component; a bridge, a tooth or teeth; a patellofemoral joint implant; a tibial tray for a knee joint replacement implant; an intermediary articulation plate for a tibial tray and liner for a knee joint replacement implant; or the intermediary articulation plate assembled in combination with the tibial tray.

Abstract: Implant has an implant body; and connected to the body, a fin type stem adapted for transverse insertion into a bodily substrate. The stem has a laterally disposed feature for providing stopping of the stem along a path it takes in its insertion into the substrate. For example, the laterally disposed feature can embrace a wedge. Tools and kits are provided for or with the implant.

Abstract: Hip implant femoral component includes a stem, say, as a flattened, rounded tapered spike having an upper trunnion with a self-holding taper, which may be symmetrical about the same central axis. A neck—say, as a flattened, curved mass having a lower receptacle with a self-holding taper to receive the stem trunnion, and an upper trunnion with a self-holding taper for holding a ball head with a corresponding receptacle—may be attached. A securing screw for threading into a threaded receptacle of the stem trunnion, which may have a truncated inverse cone head, may be employed to further secure the stem and neck together. The component, especially the stem and neck, or stem, neck and screw, may be made with a nonmagnetic cobalt-chromium-molybdenum alloy exhibiting high strength, wear and corrosion resistance, as a wrought powder metallurgy product, which is essentially if not fully 100% dense.

Abstract: Implant body has a groove into which an outer ring is fitted. The body and ring are distinct solid parts both during and after assembly. A “flat” wall may be provided for the groove. The outer ring is annularly continuous and may be under tension, with the body under correspondent compression from the ring. An arthroplasty device can be provided.

Abstract: Ceramic bodies can be made by providing an initial green body of ceramic; and machining the initial green body to provide a machined green ceramic body. Embedding the initial green body in an embedding mass can be avoided. The initial green body can be bisqued, infiltrated an adjuvant such as machining wax, removing the infiltrated body, and machining it. Highly detailed ceramic products can be generated. The machined green ceramic body may be fired and/or further processed to provide a more finished ceramic body. Examples include a femoral component for a posterior stabilized knee implant, a component body for an artificial rotation device containing knee implant prosthesis a dental implant or bridge, an ice skating blade, and so forth. Zirconia ceramics are advantageously employed, for an example, Mg-TTZ.

Abstract: Prosthetic implant or component therefor of a magnesium oxide stabilized transformation toughened zirconia (Mg-TTZ) ceramic can be made by providing a bisqued initial green body by compressing powder through a cold isostatic press and heating to a bisque stage. Then, without embedding it in an embedding mass, the bisque is machined to have a shape of the same proportions as the shape of, but larger than, the ceramic portion of a fired prosthetic implant or component product. Firing can provide the fired Mg-TTZ ceramic body product.

Abstract: Hard substance wear couple has materials of differing hardness forming surfaces for articulation in a joint implant prosthesis. For instance, a first articulating body can have a convex articulating surface, and a second articulating body can have a corresponding concave articulating surface that can articulate with the convex articulating surface of the first articulating body, in which the convex articulating surface of the first articulating body is harder than the corresponding concave articulating surface of the second articulating body. Ceramic materials are preferred.

Abstract: Fired magnesium oxide stabilized zirconia ceramic body having a highly smooth, polished or otherwise equivalent surface has, on at least part of the surface, a metal/metal alloy coating. The fired ceramic body can be a magnesium oxide stabilized tetragonally toughened zirconia. The coating can be from a metal or metal alloy other than by tantalum vapor deposition, and can include a titanium metal or alloy. The coated magnesium oxide stabilized zirconia ceramic can be a tool or an orthopedic implant or component for an orthopedic implant, which can be a load bearing implant or component for a load bearing implant having an articular surface and a nonarticular surface where the metal or metal alloy coating is on at least part of the nonarticular surface. Plasma arc spraying under vacuum may be employed.

Abstract: Modular toe joint implant is a multi-piece device. Various sized piece(s), for example, head(s) and stem(s), can be provided in a kit or separately.

Abstract: Bacterial growth or infection, especially with respect to an implant and/or tissue about the implant, can be ameliorated, controlled or eliminated by identifying a potential for or a presence of bacterial growth or infection with respect to tissue about an implant proposed for implantation; selecting as the implant a ceramic implant; and implanting the ceramic implant under conditions such that bacterial growth or infection, especially with respect to the implanted ceramic implant and/or tissue about the implanted ceramic implant, is ameliorated, controlled or eliminated at least in part from the presence of the implanted ceramic implant. Among ceramics that may be employed is a magnesium oxide stabilized transformationally toughened zirconia. The ceramic implant may be a prosthesis, which may be a load-bearing joint replacement implant or implant component.

Abstract: Prosthetic implant or component therefor of a magnesium oxide stabilized transformation toughened zirconia (Mg-TTZ) ceramic can be made by providing a bisqued initial green body by compressing powder through a cold isostatic press and heating to a bisque stage. Then, without embedding it in an embedding mass, the bisque is machined to have a shape of the same proportions as the shape of, but larger than, the ceramic portion of a fired prosthetic implant or component product. Firing can provide the fired Mg-TTZ ceramic body product.

Abstract: Prosthetic knee implant or implant component is made with a magnesium oxide stabilized transformationally toughened zirconia.

Abstract: Fired magnesium oxide stabilized transformation toughened zirconia ceramic can be for or of an implant or implant component of a one-piece unicompartmental knee spacer device; a multi-piece unicompartmental joint aligning device; a temporal mandibular joint cap implant; a vertebra cap; an ankle joint ensemble or component; a bridge, a tooth or teeth; a patellofemoral joint implant; a tibial tray for a knee joint replacement implant; an intermediary articulation plate for a tibial tray and liner for a knee joint replacement implant; or the intermediary articulation plate assembled in combination with the tibial tray.

Abstract: Cup has an articular surface upon which a ball of a joint can articulate, and a margin generally about a hemisphere and at least two hoods that are marginally extended continuations of superior one-half or so of cup containment, a joint ball; and a securing member for resistance against outward displacement of the hood(s) so that the ball can be securely contained. An inwardly biased engagement tab can be is provided for hood brace(s), and perforation(s) or hole(s) can be present about the hood brace(s) and/or cover(s).

Abstract: Implant bore insert has an outer surface that is, at least in part, substantially cylindrically aligned. The insert may be blind, thus forming a cup, or it may be open ended. The insert can be provided with a predetermined outer circumferential surface that provides for a suitable interference fit with a corresponding bore hole of an implant component part. When inserted into the bore hole, the insert preferably seats itself on a blind end of the bore hole. Examples of implants employed with the insert can include ceramic ball joint heads and teeth.

Abstract: Adjustable restraint includes a plantar plate surrounded by a peripheral element about which a plurality of supports can be positioned; a support system attachable to that plate or element for providing vertical and horizontal support; and a lower leg securing housing. The housing is attachable to the support system through adjustable fastener(s) such it can be adjusted vertically and secured in position with respect to the plantar plate. A sole portion of the plantar plate may be removable. The support system can include first support(s) and second support(s) attachable to the plate or element, and, through first adjustable fastener(s) and second adjustable fastener(s), respectively, the first adjustable fastener(s) and second adjustable fastener(s) be attachable to the housing.

Abstract: Ceramic surface can be coated with a metal or metal alloy and have extraordinary holding power between the surface and coating. For example, MgTTZ can be coated with CPT and may have a static shear strength for the coated surface of at least about 2,000 or 3,000 or 5,000 or 7,000 pounds or greater. The coated ceramic may be a prosthetic surgical load bearing implant.