Electrical Behavior of Cartilage during Loading

Science  01 Dec 1972:
Vol. 178, Issue 4064, pp. 982-983
DOI: 10.1126/science.178.4064.982


When cartilage is deformed, it becomes electrically polarized. At least two mechanisms seem to underlie this phenomenon, namely, a short-duration, high-amplitude, piezoelectric-like response and a longer-duration, lower-amplitude response secondary to streaming potentials. The polarity of articular cartilage during loading could hypothetically facilitate joint lubrication.