The anterior interbody fusion become the popular measure in the treatment of the several spinal diseases. We analyzed the 326 cases of the several spinal diseases-tuberculosis of the spine, infectious spondylitis, discitis, spondylolisthesis,
spondylolysis, spinal stenosis, and herniated nucleousus pulposus, who were treated from January, 1979 to December, 1991. And we compared the fusion rate between infectious spinal diseases (Tbc spine, pyogenic spondylitis, discitis) and
non-infectious
spinal diseases (spondylolisthesis, HNP, spinal stenosis, spondylolysis).
The purpose of this study is to compare the fusion rate and the fusing pattern of the grafted bone between the infectious and non-infectious spinal diseases.
Following results were obtained from analysis of the cases studied.
1. Over all fusion rate of the infectious spinal diseases was 88.0% and that of the non-infectious spinal diseases was 91.8%.
2. Radiologically, complete fusion was in 73.3%. Incomplete fusion in 17.4%, and absorption of grafted bone in 9.3%.
3. The fusing pattern of grafted bone could be catagorized into five different types and the common type was type 1 (61.1%).
4. High fusion rates were obtained in spinal stenosis and spondylolysis.
5. In clinical result, 82.2% of non-infectious group was satisfied, and in infectious group it was 77.5%.
6. In non-infectious spinal diseases group the clinical result was most favorable in herniated nucleosus pulposus.
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