Abstract: The invention relates to a prosthetic device (30), in particular a foot prosthesis, for fitting leg amputees, with a universal joint mechanism (32), which couples a shaft (34) with a treading attachment (40, 42) through an articulation, wherein the universal joint mechanism (32) comprises a joint element (44) supported such that it is rotatable about a first rotational axis (C) and a second rotational axis (D) differing therefrom.

Abstract: A device determines at least one characteristic point of a joint which joins together two limbs and is to be measured orthopedically comprising a first coupling element which may be positioned on a first limb adjoining the joint, a second coupling element which may be moved relative to the first coupling element and may be positioned on a second limb adjoining the joint, and a measuring device for determining the position of the first coupling element relative to the second coupling element. The measuring device has at least one reference point rigidly connected to one of the first and second coupling elements, and a reference point detection device rigidly connected to the respective other of the first and second coupling elements. During a movement of the first and second limbs with respect to one another the reference point detection device determines the at least one characteristic point.

Abstract: The disclosure relates to a method and a device for navigating and positioning an object relative to a patient during surgery in an operating room. According to the disclosure, the position and orientation of the object and the patient in the room or a respective area of the patient relative to a reference system are determined quasi continuously in accordance with a scanning rate by means of a three-dimensional inertial sensor system, the momentary position and orientation of the object relative to the patient are determined therefrom, said position and orientation are compared to a desired predetermined position and orientation, and an indication is made as to how the position of the object has to be modified in order to reach the desired predetermined position and orientation.