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KMID : 0378019790220060072
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New Medical Journal
1979 Volume.22 No. 6 p.72 ~ p.76
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Statistical Study of the Lumbosacral Angles in Spondylolysis and Spondylolisthesis
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Abstract
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The lumbosacral joint is an unstable area from an anatomical viewpoint, while it is also a very mobile area in ordinary life, so that clinically major causes of low back pain originate in this joint.
The purpose of this study is to assess the differences in the efficacy of the lumbosacral angles among low back pain patients.
The following lumbosacral angles were measured and evaluated in 70 patients with only low back pain, in 70 patients with spondylolysis, and in 50 patients with spondylolisthesis.
1. Ferguson angle.
2. Meschan angle.
3. Wedging of the lumbar spine.
4. Interrelationship between slipping and wedging of the lumbar spine.
The results are as follows:
1. The Ferguson angle was slightly increased in spondylolisthesis.
2. The Meschan angle indicated high sensitivity in spondylolisthesis, but the changes were also observed in some of the other back pain patients.
3. The lumbar index was in 92.7% of simple low back pain patients, 82.2% in spondylolysis, and 80.2% in spondylolisthesis. The average wedging of the L-5 vertebra was significantly greater in spondylolysis and spondylolisthesis than in patients without slipping of the vertebral body.
4. The degrees of wedging and of slipping showed a statistically valid correlation, although their etiological relationship remains to be further investigated.
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