一个FSU包括相邻的两个椎体及两者间的椎间盘和所有韧带，但不包括肌肉等连接组织。
FSU consists of two adjacent vertebrae, the intervertebral disc and all adjoining ligaments between them and excludes other connecting tissues such as muscles.
任何产生痛的结构都可以引起腰痛，这些异常包括椎间关节韧带、肌肉、筋膜和神经结构。
These may include abnormalities of the ligaments of the apophyseal joints, muscles and fascia, as well as neural structures.
目的：作者研究了胸腰椎椎间孔内神经根的韧带解剖，描述了它们的解剖关系及功能特性。
The author conducted a study to investigate the anatomy of the intraforaminal ligaments of the thoracic and lumbar nerve roots and describe their anatomical relationships and functional properties.
结果经重建的图像可显示颈椎后纵韧带钙化、椎间隙椎间孔狭窄、骨质增生等，胸腰椎可显示各种骨折及骨质增生、滑脱等病理改变。
ResultsCalcification of posterior longitudinal ligament, narrow of disc space or neural foramen, varied fracture bone sclerosis and spondylolisthesis could be found with this technique.
结果经重建的图像可显示颈椎后纵韧带钙化、椎间隙椎间孔狭窄、骨质增生等，胸腰椎可显示各种骨折及骨质增生、滑脱等病理改变。
ResultsCalcification of posterior longitudinal ligament, narrow of disc space or neural foramen, varied fracture bone sclerosis and spondylolisthesis could be found with this technique.
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