Electrochemical noise has been used to study the tribocorrosion behaviour of austenitic stainless steel AISI 316 in two different simulated body fluid solutions [phosphate buffer solution (PBS) and PBS plus bovine serum albumin). The analysis of potential and current transients permits not only the determination of the contribution of the aggressive medium to the total volume loss due to synergism between wear and corrosion but also the detection of changes in the mechanism produced by the mechanical/electrochemical attack.