Figure 6
From: A specific scoliosis classification correlating with brace treatment: description and reliability
L5-L4 Counter-tilting. Caudal to L4, L5 can be tilted in the same direction and degree; this is defined as negative L5-4 counter-tilting. A positive L5-4 counter-tilting defines L5 tilted in the same direction as L4 but with lesser magnitude, forming a fractioned short lumbo-sacral curve. In other words, a negative L5-4 counter-tilting means that the lower end plate of L4 and the upper end plate of L5 are parallel; conversely, a positive L5-4 counter-tilting means that the upper end plate of L5 is clearly less tilted that the lower end plate of L4.