L5-S1 is vulnerable to misalignment and injury. It can also be the site of a disc herniation or a spine disorder called ...

which is rarely more than a grade I slip. Sagittal orientation of the facet joints and facet tropism also has been related to the development of degenerative spondylolisthesis. Pathologic ...

The condition occurs most often at the L4-L5 level ... spondylolisthesis. The condition occurs most often at the L4-L5 level, and usually affects older individuals. Figure 1.