Are you familiar on leg length difference? Did you know that we all have a leg length difference? In other words we all have a difference in the length of our left and right legs. Normally the difference is only so slight that only the most sensitive tests will detect it and it will not cause any problems. If the difference in leg length is greater than the clinically insignificant amount, it can cause problems. If it causes problems, then this is all dependent on the ability of the body to adapt to the difference in leg length. Some people can adapt really well while other cannot adapt.  And for those individual who lacks of adaptation, this results in symptoms which usually affects in the back.