FIELD: devices for motion of bodies relative to one another; prostheses. SUBSTANCE: device has two parts 11 and 12 with units for connecting them to two bodies. Projecting part 14 is rigidly secured on part 11 and is located in cavity 13 found in part 12. Units 15 are used for applying force between parts 11 and 12. Part 12 which has cavity 13 is made from material which is transformable from solid underformable state to paste-like deformable state and vice versa. Solid underformable state is state at which projecting part 14 of other part is so located that deformation of above-mentioned material under action of force applied between two parts is excluded. Deformable paste-like state is such state at which projecting part 14 is located for penetration into above-mentioned material and this material may enclose projecting part 14 of part 11 made from underformable material. Device is provided with units 18 for control of process of transformation of at least of material embracing cavity 13 from one state to another and vice versa. Form of cavity 13 corresponds to at least one section of projecting part 14. EFFECT: ease of use. 14 cl, 6 dwg
