1. The post operation course of lumbar intervertebral disc hernia. Number of cases for study was 86 enquête answers for 168 cases of operations conducted by the “Love” method, and the results of the study were as follows : The overall results about 80% of the operation cases were in excellent or good conditions.
According to the study using the Röntgen-ray, 30.4% of the examples showed the narrowing in the intervertebral disc after operation, and also the narrowing in the adjacent intervertebras, The size ratio of canal to body was in the range of 1 : 3.5 to 1 : 5.5.
Although the motion of the lumbosacral spine of each patient who had the operation was limited to about 42% of a normal person, they did not feel pain.
2. Relations between the intervertebral disc hernia and Lumbosacral abnormalities. Number of cases for study was 205 cases of patients who had lumbosacral operations, and the results of the study were as follows : Ratio by sex......men 73.7%, women 26.3%, lumbal intervertebral disc hernia only 54.2%, combination of disc hernia and lumbosacral transation spine 27.8%, spondylolysis and spondylolisthesis 7.8%, Spina bifida occulta 6.8%, and others 3.4%, Also, of 172 cases of patients who had the disc hernia, 33.7% was combined with lumbosacral transation spine, And it was found that among the cases of lumbosacral. abnormalities, the lumbosacral transation spine had the greatest relation with disc hernia.
The ratio between the percentage of people with transation spine in normal people and that with lumbosacral transation spine in people who had disc hernia was 1 : 1.9.
In the motion of the lumbosacral spine of healthy people with lumbosacral transation, a decrease of the moving range in the part of lumbosacral transation spine and an increase of moving range in the immediate area above the lumbosacral transation spine were seen.
It is thought that this increase of moving range immediately above the transation spine influences the disc of the same part and causes a suecession of intervertebral disc degeneration or protrusions.
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