Abstract: A distance measurement system is provided. The distance measurement system includes at least one resonant circuit, at least one magnetic element with predetermined magnetic properties, a transmitter operable to transmit an electromagnetic pulse, a receiver operable to detect oscillations emitted by said resonant circuit in response to said electromagnetic pulse, and an analyzer operable to analyze an amplitude envelope property of said oscillations, to thereby determine a distance between the resonant circuit and the magnetic element.

Abstract: A distance measurement system, comprising at least one resonant circuit, at least one magnetic element with predetermined magnetic properties, a transmitter operable to transmit an electromagnetic pulse, a receiver operable to detect oscillations emitted by said resonant circuit in response to said electromagnetic pulse, and an analyzer operable to analyze an amplitude envelope property of said oscillations, to thereby determine a distance between the resonant circuit and the magnetic element.

Abstract: An artificial joint system is provided herein. The system includes an artificial joint implantable within an individual, the artificial joint including artificial joint members each having an articulating surface and a bone attachment surface, wherein the articulating surfaces are in articulative engagement therebetween. The system further includes a detection system implanted within, or attached to, the artificial joint members and/or the bones to which the members are attached. The detection system serves for communicating an information signal receivable outside the body, the information signal indicative of a parameter associated with displacement between an artificial joint member and a bone to which it is attached and/or to wear or relative displacement of the articulating surfaces.