Figure 2.

Measurements of intervertebral displacement resulting from the posterior to anterior (PA) mobilization and the prone press-up (PU) maneuver. The intervertebral (segmental) angle was measured as the angle formed by lines defining the endplates of adjacent vertebrae. Segmental lumbar displacement was defined as the difference in the intervertebral angle between the resting position (left) and intervertebral angle from the end range image (right). The arrow in Figure 2a identifies the hand of the examiner performing the PA mobilization.