Rudimentary Disc At S1-s2 The Anterior Lumbosacral Transitional Angle Is Defined As The Angle
Plain radiographic studies have shown that the lumbosacral intervertebral disc is of significantly reduced height compared with normal lumbosacral interval discs,6and that on lateral. The disc between anomalous segments has a characteristic appearance on sagittal t2 mr images, not previously described. Transitional states of vertebrae at the lumbosacral junction are associated with low back pain.
Figure 2 from The association between lumbar rib and lumbosacral
Type 2 consists of a small residual disk with an ap length less than that of the sacrum. Your body read this unfused segment as a lumbar and started to form a. Type 1 exhibits no disk material and is seen in patients without transitional segments.
Type 2 with a small disc that does not.
This l5 vertebra is sacralized in that it is more anatomically associated with the sacral level with a rudimentary disc between it and the segment below. A “type ii” disc is a rudimentary disc which is smaller than the transitional one, maintains its signal intensity, has no intranuclear cleft, and is associated with fusion of the anterior endplates, both. Partial lumbarisation can been seen with distinct disc space between the s1 and s2 or partial fusion between the bodies of s1 and s2 with no disc space between them. These have been classified into two types:
In addition there was evidence of. Assimilation of l5 to the sacrum;
.jpg?format=1500w)
Lumbarization and sacralization — Cote Illustration

Figure 2 from The association between lumbar rib and lumbosacral

“Lumbarised S1” The transitional (potentially mobile) lumbosacral