徳島大学 教育・研究者情報データベース(EDB)

1. 酒井 紀典([徳島大学.病院.中央診療施設等.高度先進整形外科診療部])

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2. 西良 浩一([徳島大学.大学院医歯薬学研究部.医学域.医科学部門.外科系.運動機能外科学])

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3. 髙尾 正一郎([徳島大学.大学院医歯薬学研究部.保健学域.保健科学部門.放射線科学系.医用画像解析学]/[徳島大学.医学部.保健学科.放射線技術科学専攻.診療放射線技術学講座])

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4. 西谷 弘

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5. 安井 夏生

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(英) Incidence of lumbar spondylolysis in the general population in Japan based on multidetector computed tomography scans from two thousand subjects.

(英) Epidemiological analysis using CTs. To investigate the true incidence of lumbar spondylolysis in the general population in Japan. Although there have been several reports on the incidence of lumbar spondylolysis, they had some weakness. One of them concerns the subjects investigated, because the incidence of lumbar spondylolysis varies considerably, and some patients are asymptomatic. In addition, most of the past studies used plain radiograph films or skeletal investigation. Therefore, the past reported incidence may not correspond to that of the general population. We reviewed the computed tomography (CT) scans of 2000 subjects (age: 20-92 years) who had undergone abdominal and pelvic CT on a single multidetector CT scanner for reasons unrelated to low back pain. We reviewed them for spondylolysis, spondylolytic spondylolisthesis, and spina bifida occulta (SBO) in the lumbosacral region. The grade (I-IV) of spondylolisthesis was measured using midsagittal reconstructions. Lumbar spondylolysis was found in 117 subjects (5.9%). Their male-female ratio was 2:1. Multiple-level spondylolysis was found in 5 subjects (0.3%). Among these 117 subjects, there were 124 vertebrae with spondylolysis. Of them, 112 (90.3%) corresponded to L5, and 26 (21.0%) had unilateral spondylolysis.SBO was found in 154 subjects. Of them, 25 had spondylolysis (16.2%), whereas, in 1846 subjects without SBO, 92 had spondylolysis (5.0%). The incidence of spondylolysis among the patients with SBO was significantly higher than that in subjects without SBO (Odd ratio was 3.7-fold).Of 124 vertebrae with spondylolysis, 75 (60.5%) showed low-grade (Meyerding grade I or II) spondylolisthesis, and no subject presented high-grade spondylolisthesis. Spondylolisthesis was found in 74.5% of the subjects with bilateral spondylolysis, and in 7.7% of those with unilateral spondylolysis. The incidence of lumbar spondylolysis in the Japanese general population was 5.9% (males: 7.9%, females: 3.9%).

1. (英) Adult
2. (英) Aged
3. (英) Aged, 80 and over
4. (英) Female
5. (英) Humans
6. (英) Incidence
7. (英) Japan
8. (英) Lumbar Vertebrae
9. (英) Male
10. (英) Middle Aged
11. (英) Spina Bifida Occulta
12. (英) Spondylolisthesis
13. (英) Spondylolysis
14. (英) Tomography, X-Ray Computed
15. (英) Young Adult

1. (英) Article.Affiliation: Departments of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.

2. (英) Article.PublicationTypeList.PublicationType: Journal Article