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KMID : 0371319640060080487
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Journal of the Korean Surgical Society
1964 Volume.6 No. 8 p.487 ~ p.494
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Statistical Survey of the Congenital Anomalies of Lumbosacral Spine
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金相文/Kim, Sang Moon
尹琮燮/申廷淳/Yoon, Jong Sup/Shin, Jung Soon
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Abstract
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The purpose of this paper is to summarise the theories relating to the etiology and developmental process of congenital anomalies of lumbosacral spine, as well as to present the statistical data for those anomalies, which were found in pre-employment examination of lumbosacral spine of 1617 candidates of Korean coal miners.
The author woud appreciate, if this paper is contributable as a reference for the statistical index of various lumbosacral anomalies mostly seen in Korean natives, also for pre-employment examination of lumbosacral spine which is required by many heavy industrial organizations in anywhere of the world.
Numerous causative factors are participated in furnishing the etiological background of congenital anomalies of lumbosacral spine, variations in the developmental process modify or accelerate the final formation of those anomalies.
The result of our investigation suggests that the following asymptomatic conditions of lumbosacral spine should not be accepted for assigning to heavy labor, in the industrial hygienic standpoint. as the basic policy for pre-employment examination of spine:
1) Asymptomatic latent spondylolysis or spondylolisthesis.
2) Asymptomatic spina bifida occulta with defect more than minimum degree.
3) Asymptomatic incomplete sacralization such as unilateral or incomplete bilateral sacralization.
4) Asymptomatic asymmetrical facets more than moderate degree.
The order of frequency in significant anomalies is as follows. Spina bifida of first sacral vertebra has the highest incidence, and it was 18.9%, next was asymmetrical facets, 12.4%, thirdly, lumbarization of first sacral vertebra. 8.4%, fourthly. spondylolysis, 5.7%, and fifthly, sacralization of last lumbar vertebra, 4.2%.
Our statistical study in this investigation has proved that spina bifida is the most common congenital anomaly of lumbosacral spine not only in Korea but in the western world. Susceptibility of spina bifida to disc herniation is also discussed in this paper.
It would be fortunate, if this paper bring some interest not only to the orthopedist or radiologist in academic standpoint, but many others such as health administrating officers in various fields of industry.
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