Dimensions of the spinal canal in individuals symptomatic and non-symptomatic for sciatica: a CT study
- 35 Downloads
Measurements obtained in 50 spinal CT studies of patients referred for suspected lumbosacral nerve root compression, were compared to those of a group of 30 individuals asymptomatic in this respect, who had been referred for abdominal pathology. Transverse ligamentous interfacet and transverse dural dimensions were significantly reduced in the sciatica group, with usually normal interpedicular and sagittal dimensions ruling out idiopathic developmental stenosis. The borderline value for ligamentous interfacet distance (ILD) at L4-5 appeared to be 11 mm.
Key wordsComputed tomography Nerve root compression Spinal stenosis Transverse narrowing
Unable to display preview. Download preview PDF.
- 1.Paine KWE, Haung PWH (1972) Lumbar disc syndrome. J Neurosurg 37: 75–82Google Scholar
- 2.Penning L, Wilmink JT (1987) Posture dependent bilateral compression of L4 or L5 nerve roots in facet hypertrophy: A dynamic CT-myelographic study. Spine 12: 488–500Google Scholar
- 3.Verbiest H (1979) The significance and principle of computerized axial tomography in idiopathic developmental stenosis of the bony lumbar vertebral canal. Spine 4: 369–378Google Scholar