Bipolar Femoral Head:
Double-interface rotation increases femoral head’s activity and deduce polyethylene fretting. The patented design of ringlock inside the liner, which can be fasten with the ball-head, makes the product convenient to fix and have stable effect of anti dislocation. It needs only 10N force to press in but 650N to pull out without special instruments, so as to achieve better locking and activity. It is convenient to repair and replace its head with special instruments.
