Figure 1From: Biomechanical study of a novel self-locking plate system for anterior cervical fixationScrew and ring and the lateral view of the self-locking plate system. (A, C) The polyethylene ring that is fitted into the screw hole and the screw. (B, D) A lateral view of the self-locking plate system, which employs a polyethylene ring to lock the screw into the plate.Back to article page