... acousticproperties of the cartilage are measured by introducing anultrasonic probe during arthroscopy of the knee joint. The purpose of the current study was to determine the efficacy of this ultrasound system ... disease do not repairthemselves spontaneously, because of the low mitotic activity of chondrocytes and the avascular nature of this type of carti-lage [1,2]. Therefore, defects may require novel ... below,left, and right of the center. The percentage maximum magni-tude (the maximum magnitude of the measurement area of the operated knee divided by that of the intact cartilage of the opposite, nonoperated...