The advanced model of wear in the spherical joint of total hip prosthesis comprising an acetabular cup of ultra-high molecular weight polyethylene (UHMWPE) in combination with a metal or ceramic femoral head is developed. The wear model is based on the classical Archard-Lancaster equation in common with all other studies reported in literature. The finite element solution of the contact problem between the cup and the head was employed under the loading and angular motions conditions according to the ISO 14242-1 demands. The polymer wear in terms of cumulative linear and volume wear when the wear factor is chosen to be a function of contact pressure is first evaluated.

This paper presents new design of total hip endoprosthesis, elements of whose were developed from the standpoint of system analysis and synthesis of biomechanical objects and devices. The main objective of this work is to increase the functional reliability of the endoprosthesis. The system approach was used in all stages of its development, including formulation of the problem and designing of manufacturing techniques.

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The modern concept of automation production uses the principles of integration of the element base at the level of systems that allows to create universal and specialized automated technological systems for solving various technological problems. Such integration has led to the appearance and development of a new area of science and technology -mechatronics. A characteristic feature of mechatronics is a synergistic unity of energy and information streams aimed at achieving a common goal. Within the framework of the International Project «FESTO-SYNERGY" in the Laboratory of Biomechanics of the Sevastopol State University was created a number of test devices for the modeling of movements of human skeleton elements. The use in these devices mechatronic modules FESTO has allowed to make them universal and to provide complex laws of motion of the executive bodies, the implementation of which is required for simulating of natural human movements as a biomechanical system.