Abstract: The invention relates to a center of gravity control display system for measuring the human body and/or prosthetic or orthotic fittings in their positions relative to the human body. According to the invention, this system consists of a measuring plate (1) for determining center of gravity (4) projected in the plane of measuring plate (1), of a person standing on measuring plate (1), and of a projection device (2) for projecting a perpendicular measuring line onto the body of said person, with measuring plate (1) being provided with pressure sensors (3) connected with one another by a circuit, said sensors delivering an electrical signal defining the determined center of gravity position, said signal controlling a drive that displaces an optical system in a plane parallel to that of measuring plate (1), said system projecting a light beam (19) as a vertical measuring line that defines a plane in which center of gravity (4) of the person being measured lies.

Abstract: The invention relates to a device for mutual pivoting connection of parts of an orthopaedic apparatus, such as in particular a knee prosthesis for leg amputees, comprising a kinematic multiple linkage system with at least four rods, adjoining rods of which have a common pivot axis and the pivot axes extend substantially mutually parallel.

Abstract: An electromechanical transducer having a first element movable in relation to a second element, wherein the first and second elements perform a translational movement relative to one another. A transducer element mechanically coupled to the first element and second elements for converting the translational movement into an electrical signal. A transmission element converting the relative translational movement of the first and second elements into a rotating movement of the transducer element so as to produce the electrical signal.Applicant claims, under 35 U.S.C. .sctn.120, the benefit of priority of the filing date of Jun. 17, 1991, of International Patent Application PCT/NL91/00099, copy attached, filed on the aforementioned date, the entire contents of which are incorporated herein by reference. Applicant also claims, under 35 U.S.C. .sctn.119, the benefit of priority of the filing date of Jun. 19, 1990, of Netherlands Patent Application No.

Abstract: The invention relates to a swivel connection between two parts of an orthopedic technical aid, for example a prosthesis or orthotic device, with an adjustable, inherent articulation stability, consisting of a plane kinematic articulation chain with at least four articulation members and a polycentric swiveling characteristic composed of translatory and rotatory components, the swiveling of at least one articulation member being limited in at least one swivel direction by a first swivel stop. For improving the function, it is proposed that at least one articulation member should be designed in such a way that its length can be altered under the action of an external force.