Abstract: In a prosthesis component of a joint endoprosthesis, the prosthesis component comprises a sliding surface that is designed to form a sliding joint with a counter sliding surface of another prosthesis component. The sliding surface may be formed by a sliding surface coating deposited on the body of the prosthesis component, wherein the sliding surface coating has an antimicrobial effect. The sliding surface coating is active against microorganisms in the area of the sliding joint.

Abstract: An endoprosthesis component and a method for producing an endoprosthesis component is disclosed. The endoprosthesis component comprises a body predefining the shape of the endoprosthesis component. On surface portions with which the endoprosthesis component in the implanted state is in contact with human tissue, the body is covered with an outer layer which comprises a nitride, an oxynitride or an oxide based on a refractory metal and which contains silver and/or copper. An intermediate layer is arranged between the outer layer and the body in such a way that parts of the intermediate layer are accessible from the outside. The endoprosthesis component enables generation of a long-term antimicrobial action with the outer layer and, in addition, action on the surrounding tissue from the intermediate layer.

Abstract: In a prosthesis component of a joint endoprosthesis, the prosthesis component comprises a sliding surface that is designed to form a sliding joint with a counter sliding surface of another prosthesis component. The sliding surface may be formed by a sliding surface coating deposited on the body of the prosthesis component, wherein the sliding surface coating has an antimicrobial effect. The sliding surface coating is active against microorganisms in the area of the sliding joint.

Abstract: In a coated implant that releases silver ions in the human body and thereby has an antimicrobial effect, a first surface component of the coating is formed by an anode material. A second surface component of the coating is formed by a cathode material. The cathode material is higher in the electrochemical voltage sequence than the anode material. The cathode and the anode are connected with one another in an electrically conducting manner. Together with the body electrolyte in the vicinity of the implant the anode and the cathode material form a plurality of local galvanic elements.

Abstract: An endoprosthesis component and a method for producing an endoprosthesis component is disclosed. The endoprosthesis component comprises a body predefining the shape of the endoprosthesis component. On surface portions with which the endoprosthesis component in the implanted state is in contact with human tissue, the body is covered with an outer layer which comprises a nitride, an oxynitride or an oxide based on a refractory metal and which contains silver and/or copper. An intermediate layer is arranged between the outer layer and the body in such a way that parts of the intermediate layer are accessible from the outside. The endoprosthesis component enables generation of a long-term antimicrobial action with the outer layer and, in addition, action on the surrounding tissue from the intermediate layer.

Abstract: In a first aspect, the present invention discloses a self setting calcium phosphate cement comprising:—(i) a powdered component, said powdered component having an average particle size d50 of less than 15 ?m, and (ii) a calcium phosphate based powder, said powder having an average particle size d50 greater than that of the powdered component, said powdered component and said calcium phosphate based powder being suspended in water containing a dissolved zeta potential increasing additive in sufficient quantity to increase the zeta potential of the suspended particles to at least 30 mV, and wherein the zeta potential increasing additive is chosen to be compatible with the setting pH of the same calcium phosphate cement without the zeta potential increasing additive.

Abstract: In a first aspect, the present invention discloses a self setting calcium phosphate cement comprising:—(i) a powdered component, said powdered component having an average particle size d50 of less than 15 ?m, and (ii) a calcium phosphate based powder, said powder having an average particle size d50 greater than that of the powdered component, said powdered component and said calcium phosphate based powder being suspended in water containing a dissolved zeta potential increasing additive in sufficient quantity to increase the zeta potential of the suspended particles to at least 30 mV, and wherein the zeta potential increasing additive is chosen to be compatible with the setting pH of the same calcium phosphate cement without the zeta potential increasing additive.

Abstract: A hip joint socket for implantation without cement into the acetabulum of the hip bone, consisting of an elastic socket support, which has the shape of an essentiallly hemispherical shell and can be inserted in an interlocking manner into the correspondingly prepared acetabulum bed. The socket support is formed so that after its implantation it quicklly grows together with the hip bone, and, even with considerable stress, relative movement between the socket support and the acetabulum is prevented. This is attained by constructing the socket support so that it exhibits its greatest stiffness in cranial portion in the implanted state, while in the downward (caudal) direction the elasticity of socket support increases. The wall thickness of socket support is greatest in cranial portion and decreases in the direction toward caudal portion.