Fig. 4
From: Is there any advantage of using stand-alone cages? A numerical approach
FSU analysis of the influence of ligament pretension. Range of motion of an FSU in which the pretension of the ligaments due to intervertebral space distraction is considered. The value of the distraction is introduced as a percentage of the height of the intact intervertebral disc. The ROM for each moment is shown for an intact FSU with and without pretension, and for an operated segment with a stand-alone cage