Fig. 7
From: Design and Development of a Novel 3-D Printed External Fixation Device for Fracture Stabilization
Figure A demonstrates the free-floating ball-screw (red star) in the pin-to-block component with the compression fixation hex screw (yellow arrow) fully tightened maintaining that press-fit angle of the ball-screw. The blue dot represents where a clamp would be applied between the hex-head screw and nut from Fig. 6 to prevent upward and downward migration on the metal pins. Two wrenches (green triangle) could tighten the screw-nut to secure the clamp on the pin. Figure B demonstrates an extension rod cylinder (red star) screwed into the ball-screw component to create length with the external fixator