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KMID : 0378019720150060061
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New Medical Journal
1972 Volume.15 No. 6 p.61 ~ p.71
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The Korean Lumbar Intervertebral Discs
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Abstract
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The purpose of this study is to investigate the Korean lumbar intervertebral discs in 150 lumbar spine, removed from cadavers, which were necropsied in the Department of Anatomy. One hundred fourty eight subjects were male and two were female. The youngest subject was aged fifteen years and the oldest, sixty years.
The distribution of cases by decades is as follows: 5 cases of second decade, 20 cases of third decade, 50 cases of fourth decade, 50 cases of fifth decade and 25 cases of sixth decade.
Total lumbar spines were removed from the upper surface of the first sacral vertebral body and then simple lateral and anteroposterior roentgenograms were taken. After this fourty two lumbar spines, which seemed to have some abnormality in roentgenograms or macroscopical findings, were sectioned mid sagittally with the band saw and investigated comparing with roentgenograms, and from
resting 108 lumbar spines all discs were removed and measured their horizontal diameter, longitudinal diameter and thickness.
The results of these investigations were as follows:
1. Generalized hypertrophic arthritis was found in 14 cases, a 9.3% incidence, and multiple or single hypertrophic arthritis or spur formation was found in 10 cases, a 6.7% incidence. The highest incidence of spur formation was found in the third lumbar intervertebral disc region, 14.7%, and the j lowest incidence, in the first lumbar intervertebral disc region, 9.3%.
2. Narrowed intervertebral space or thinned disc was usually recognized in those levels which had spur formation, while in one case noted generalized narrowing of lumbar intervertebral space without any evidence of spur formation or herniation of intervertebral disc, and also one, in the third and five, in the fourth intervertebral´space.
3. Posterior herniation of nucleus pulposus was found in 6 cases (4. 0%) at the level of fourth intervertebral disc, anterior herniation of nucleus pulposus was found in 2 cases (1.3%) at the levels of third and fourth intervertebral disc, and intraspongy herniation or Schmorl´s node was found in 2 cases (1.3%) each in the second and third vertebral body.
4. Generalized osteoporosis was found in 11 cases, a 7.3% incidence. In two of. these cases "old com￢pressed-fractures were found. These old fractures were found in the second and third vertebral" bodies.
5. Calcification of the anterior longitudinal ligament was seen in $.cases (5.3%), in the lateral view of simple roentgenogram of removed lumbar spine.
6. The largest lumbar intervertebral disc was the fourth, and the smallest was the first lumbar intervertebral disc. The size of intervertebral disc of second and sixth decades was a little smaller than the disc of third, fourth and fifth decades.
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