Abstract: An orthopedic implant with a diffusion-hardened surface on non-load bearing areas of the implant for interaction with non-load bearing surfaces of a polymeric bio-compatible material, such as UHMWPE. The orthopedic implant is a posterior stabilized knee prosthetic and system where a coating of oxidized zirconium is formed in the cam of the femoral prosthetic for interaction with the central post of a polymeric tibial insert. The diffusion-hardened surface of the orthopedic implant provides a strengthened cam and reduction in wear in the central post of the polymeric tibial insert.

Abstract: A textured surface and oxidation layer coating on a metallic material is accomplished through the chemical and/or electrochemical etching of the surface to modify the surface texture and an in-situ oxidation procedure. The surface is useful for the fabrication of prosthetic devices, particularly medical implants, due to the corrosion and wear resistance imparted by the oxidation layer and the ability to enhance grafting of the implant onto bone imparted by the surface texture.

Abstract: A hanger bar assembly for supporting an outlet box between spaced apart support elements including a first channel member being longitudinally slidingly engagable with a second channel member forming a longitudinally adjustable support bar. The first channel member has a plurality of longitudinally extending grooves and the second channel member having a plurality of longitudinally extending rails slidingly received in the grooves such that lateral movement between the first and second channel members is resisted. A clamping device is provided for urging the first and second channel members into respective forced engagement thereby restricting movement between the first and second channel members. A securement device attached to the support bar for securing the support bar to the spaced support elements is further provided. The first and second channel members have apertures formed therein to accommodate fasteners for securing end plates to the support.