TRIBOLOGICAL CHARACTERISTICS OF DIFFERENT PAIRS OF FRICTION DURING ARTHROPLASTY OF LARGE JOINTS
16 pairs of friction of hip prostheses have been studied in biological environment and dry friction conditions. In samples with a polyethylene liner the strength of adhesive bonds and the coefficient of friction were minimal in terms of the biological environment and increased at dry friction. In samples with a metal liner a friction coefficient reached the maximum value in a biological environment and reduced at dry friction. Optimal pairs of friction were "oxinium-polyethylene" and "aluminum ceramics-polyethylene" with the head of larger diameter (32mm), which showed a minimal coefficient of friction (0.009... 0.010), the lowest strength of adhesive bonds (0.2 MPa) and the lowest rate of hardening these bonds (0.006... 0.008).