Transitional lumbosacral discs. probability of herniation

Spine (Phila Pa 1976). Mar-Apr 1981;6(2):168-71. doi: 10.1097/00007632-198103000-00011.


The charts and roentgenograms of 200 patients operated upon for lumbar disc herniations were reviews. Among them, there were 42 persons in whom a lumbosacral transitional vertebra existed. The discs beneath these vertebra varied in appearance. A descriptive classification for the four disc types is proposed. In none of the 42 patients were there myelographic evidence of herniation of such a disc. In five instances, such disc were surgically inspected, and no protrusion was uncovered. Before transitional discs are operated upon, the proof of herniation should be incontrovertible.

MeSH terms

  • Adult
  • Aged
  • Female
  • Humans
  • Intervertebral Disc / diagnostic imaging
  • Intervertebral Disc Displacement / diagnostic imaging*
  • Intervertebral Disc Displacement / surgery
  • Lumbosacral Region / diagnostic imaging
  • Male
  • Middle Aged
  • Myelography
  • Probability