Using the vault hold, the examiner applied a gentle force with the index finger of one hand and the fifth finger of the other hand simultaneously in a superior (cephalad) direction. First, testing was completed for torsion on one side and, then, after allowing the motion to return to a position of easy neutrality, testing was completed on the opposite sides. The forces were extremely gentle. Following the initiation of motion by the examiner, the motion was monitored to its restricted end point. The restriction was rated for the side on which the great wing of the sphenoid bone resisted superior motion; if the left great sphenoid wing and the right occipital squamous moved easily in a superior direction, but the right great wing and the left squamous moved superior (cephalad) with difficulty, the restriction was rated as a 2 or 3 on the right side in reference to the right wing of the sphenoid bone offering resistance to the superior motion.