Anderson D J, Adcock D F, Chovil A C, Farrell J J
Department of Preventive Medicine, University of South Carolina School of Medicine, Columbia.
Br J Ind Med. 1988 Aug;45(8):552-5. doi: 10.1136/oem.45.8.552.
The oblique parasagittal diameter of the lumbar spinal canal at the L5-S1 level was measured in 49 employees of the Wm Jennings Bryan Dorn Veterans' Hospital using real time ultrasound in a case-control study. Individuals with a canal diameter of less than 14 mm represented the lowest 10th percentile in this population and being in the narrowest 10th percentile constituted a risk factor for time missed from work because of low back pain (odds ratio 10.7). Whereas numbers in this pilot study are small, results are consistent with earlier ultrasound studies done in the United Kingdom and with other research showing increased morbidity from low back pain in individuals with small lumbar canals. Ultrasound has advantages over other modalities for measuring the size of the lumbar canal and may be useful as a preplacement screening examination in industry.
在一项病例对照研究中，使用实时超声对Wm Jennings Bryan Dorn退伍军人医院的49名员工进行了L5 - S1水平腰椎管斜矢状径的测量。椎管直径小于14毫米的个体在该人群中处于最低的第10百分位数，处于最狭窄的第10百分位数是因腰痛而误工的一个风险因素（优势比为10.7）。尽管这项初步研究中的样本数量较少，但其结果与英国早期的超声研究以及其他表明腰椎管狭小个体腰痛发病率增加的研究一致。超声在测量腰椎管大小方面比其他方式具有优势，并且可能作为行业入职前筛查检查手段。
