Abstract
This retrospective study of 95 patients on lumbar disc herniation for first operation concerned the relationship between extrusion of annulus fibrosus and end plate lesion, and the changes of facet angle. Before operation, the observation of the end plate lesion on MRI in the adjacent vertebral body of the herniated disc and the estimation of the facet angle on CT of the herniated disc level were performed. The rate of the end plate lesion was significantly higher in the vertebral body adjacent to the extruded annulus fibrosus than not so one (p<0.05). The facet angle of the herniated disc level was lower in the extruded annulus fibrosus than not so one (p<0.05). The extruded annulus fibrosus in lumbar disc herniation were suggested by the fact of end plate lesion and/or the lower angle of facet angle.
