1 Incorrectly measured screw lengths were one of the most common reasons for wasted materials, the cumulative cost of which may be significant for a health care system. 1 , 2 While other biomechanical studies have assessed the effect of insertion technique, 3 insertion angle, 4 and screw pitch 5 , 6 on screw purchase, the influence of reinserting a CS is unknown.
1
—
—