Prostheses, acetabular apparatuses, and methods of use are disclosed. In some embodiments, an acetabular apparatus includes an acetabular cup and an acetabular cage disposed within an interior of the acetabular cup. The acetabular cage may include a central portion including a first section and a second section rotatably coupled together, and a first flange extending from the first section and a second flange extending from the second section. The acetabular prosthesis may further include a fastener extending through each of the acetabular cup and the central portion of the acetabular cage.

Medical implant surface treatments and methods are described. Such a surface treatment may provide an uneven texture that is configured to interlock with adjoining bone and/or an uneven texture on another implant, such as an augment for an acetabular cup for revision hip surgery. At least one of the uneven texture of the cup bone-facing surface and the uneven texture of the augment cup-facing surface may include a web of rods. The rods may be configured to interlock with each other when the two implants are urged together.

An orthopaedic prosthetic system includes a plate having one or more flanges and an acetabular shell component. Each flange includes a surface configured to engage a patient's bone. The plate also includes a central ring that engages a lip extending from an outer surface of the shell component. The ring may be mechanically attached to the lip using multiple fasteners. The system may include multiple plates each having a different configuration from other plates, and may also include multiple shell components each having a different configuration from other shell components. Methods for assembling and using the prosthetic system are also disclosed.

An acetabular shell component includes a solid substrate, a porous outer layer coupled to the solid substrate, a porous inner layer coupled to the solid substrate, and an inner bearing coupled to the porous inner layer. One or more adjuncts extend outward from the porous outer layer. Each adjunct includes an outer surface that defines a customized patient-specific negative contour shaped to conform to a positive contour of a patient's bone. A method for manufacturing the acetabular shell component using an additive manufacturing process is also disclosed.

Implants for prevention of cold welding, corrosion and tissue overgrowth on surfaces between medical implant components include a first medical implant component having a first implant contact surface, a second medical implant component having a second implant contact surface positionally interfacing with the first implant contact surface of the first medical implant and a separation coating material on at least one of the first implant contact surface and the second implant contact surface. Methods for prevention of cold welding and/or corrosion between and/or tissue/bone overgrowth on implant components and methods of scaling an interface between a first implant component and a second implant component in a prosthesis system are also disclosed.

Methods for prevention of cold welding and/or corrosion between and/or tissue/bone overgrowth on implant components may include obtaining a first medical implant component having a first implant contact surface; obtaining a second medical implant component having a second implant contact surface, the second implant contact surface adapted for placement into contact with the first implant contact surface, the first implant contact surface and the second implant contact surface encompassing all points of contact between the first medical implant component and the second medical implant component; and applying a nonmetallic biocompatible separation coating material having a wax formulation on at least one of the first implant contact surface and the second implant contact surface, the nonmetallic biocompatible separation coating material separates the first implant contact surface from the second implant contact surface at all of the points of contact between the first medical implant component and the second medical implant component. Medical implant for prevention of cold welding, corrosion and tissue overgrowth on medical implant components are also disclosed.

A surgical navigation system comprising a signal receiver communicatively coupled to a primary processor, the primary processor programmed to utilize a sequential Monte Carlo algorithm to calculate changes in three dimensional position of an inertial measurement unit mounted to a surgical tool, the processor communicatively coupled to a first memory storing tool data unique to each of a plurality of surgical tools, and a second memory storing a model data sufficient to construct a three dimensional model of an anatomical feature, the primary processor communicatively coupled to a display providing visual feedback regarding the three dimensional position of the surgical tool with respect to the anatomical feature.

An implant includes a base, a flange, and ridge. The flange extends from the base. The ridge extends from the flange. A hole extends through the flange and the ridge. A system with the implant includes a fastener extending through the ridge of the implant. The implant is placed into bone by securing a base of the implant to a main complementary contact surface of bone and by securing a ridge extending outwardly from a flange of the implant to a secondary complementary contact surface of bone spaced from the main complementary contact surface.

An orthopaedic prosthetic system includes a plate having one or more flanges and an acetabular shell component. Each flange includes a surface configured to engage a patient's bone. The plate also includes a central ring that engages a lip extending from an outer surface of the shell component. The ring may be mechanically attached to the lip using multiple fasteners. The system may include multiple plates each having a different configuration from other plates, and may also include multiple shell components each having a different configuration from other shell components. Methods for assembling and using the prosthetic system are also disclosed.

An acetabular shell component includes a solid substrate, a porous outer layer coupled to the solid substrate, a porous inner layer coupled to the solid substrate, and an inner bearing coupled to the porous inner layer. One or more adjuncts extend outward from the porous outer layer. Each adjunct includes an outer surface that defines a customized patient-specific negative contour shaped to conform to a positive contour of a patient's bone. A method for manufacturing the acetabular shell component using an additive manufacturing process is also disclosed.