Intervertebral disc degeneration associated with lumbosacral transitional vertebrae
- 1 May 2005
- journal article
- Published by British Editorial Society of Bone & Joint Surgery in The Journal of Bone and Joint Surgery. British volume
- Vol. 87 (5), 687-691
- https://doi.org/10.1302/0301-620x.87b5.15727
Abstract
We studied 52 patients, each with a lumbosacral transitional vertebra. Using MRI we found that the lumbar discs immediately above the transitional vertebra were significantly more degenerative and those between the transitional vertebrae and the sacrum were significantly less degenerative compared with discs at other levels. We also performed an anatomical study using 70 cadavers. We found that the iliolumbar ligament at the level immediately above the transitional vertebra was thinner and weaker than it was in cadavers without a lumbosacral transitional vertebra. Instability of the vertebral segment above the transitional vertebra because of a weak iliolumbar ligament could lead to subsequent disc degeneration which may occur earlier than at other disc levels. Some stability between the transitional vertebra and the sacrum could be preserved by the formation of either an articulation or by bony union between the vertebra and the sacrum through its transverse process. This may protect the disc from further degeneration in the long term.Keywords
This publication has 26 references indexed in Scilit:
- Anatomy of the Iliolumbar LigamentClinical Orthopaedics and Related Research, 2000
- Does the iliolumbar ligament prevent anterior displacement of the fifth lumbar vertebra with defects of the pars?The Journal of Bone and Joint Surgery. British volume, 2000
- Biomechanical functions of the iliolumbar ligament in L5 spondylolysisJournal of Orthopaedic Science, 2000
- Relationship Between Morphology of Iliolumbar Ligament and Lower Lumbar Disc DegenerationJournal of SPINAL DISORDERS, 1999
- The anatomy of the iliolumbar ligamentArchives of Physical Medicine and Rehabilitation, 1994
- L4–5 Isthmic SpondylolisthesisSpine, 1994
- The Role of the Iliolumbar Ligament in the Lumbosacral JunctionSpine, 1990
- Torsional Stability of the Lumbosacral JunctionSpine, 1989
- The Biomechanical Functions of the Iliolumbar Ligament in Maintaining Stability of the Lumbosacral JunctionSpine, 1987
- The iliolumbar ligament. A study of its anatomy, development and clinical significanceThe Journal of Bone and Joint Surgery. British volume, 1986