For knee joints: 3R106, 3R106=ST, 3R106=HD, 3R60, 3R60=ST, 3R60=HD, 3R60-PRO, 3R60-PRO=ST, 3R60-PRO=HD, 3R72, 3R80, 3R90, 3R92 (also for 3R60=KD, 3R106=KD) The 3S107 covers for modular transfemoral prostheses have a stepped center hole and are pre-shaped.
