Type 2 with a small disc that does not. But anatomical variations of the sacrum have been reported like sacralisation of fifth lumbar vertebra and. 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.
Figure 2 from The association between lumbar rib and lumbosacral
Transitional anatomy, with rudimentary disc at s1/s2.
The cord terminates normally at l1/2.
16, have observed that when a lumbarized s1 is present, the disk space between s1 and s2 is larger than the rudimentary disc. A large circumscribed midline mass destroys the sacrum from the level of the inferior aspect of. Partially lumbarized samples showed 1) gap (mean 1.43 mm) between s1 and s2 bodies; In addition there was evidence of.
2) incomplete separation between s1 and s2 neural arch elements with the s1 arches. Assimilation of l5 to the sacrum; Your body read this unfused segment as a lumbar and started to form a. Normally, the sacrum is formed by the fusion of five rudimentary vertebrae.
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.
This fact was observed in our study wherein. 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. These have been classified into two types: The disc between anomalous segments has a characteristic appearance on sagittal t2 mr images, not previously described.
