Horses suffering from lowering back have weak ligaments and muscles and hardly possess carrying capacity. The back looks like a hammock. The ligaments and bones are excessively loaded. Old horses have frequently a lowering back; broodmares used also for a long time, which are not ridden, are prone to it as well. It can be inherited or from too early load of the back. This deformation cannot be reversed.
If the horse is ridden consistently in stretch position, it is possible to strengthen again the musculature at the belly and back. Horses with lowering backs are more susceptible to get Kissing Spine; an illness, with which the thorn extensions of the sagging spinal column are inclined towards each other and overlapping. Old horse can have lowering back with the thorns of the spine extensions touching each other but not necessarily.