Ochia Ruth S, Inoue Nozomu, Takatori Ryota, Andersson Gunnar B J, An Howard S
Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA.
Spine (Phila Pa 1976). 2007 Jun 1;32(13):1394-9. doi: 10.1097/BRS.0b013e318060122b.
Twenty male volunteers in their 30s (10 asymptomatic and 10 chronic low back pain) were passively rotated and CT scanned to determine lumbar segmental motion.
To determine the feasibility of measuring 3-dimensional segmental motion in vivo in pain subjects.
Axial rotational spinal instability has been implicated as a potential cause of low back pain. Previous studies have not compared 3-dimensional segmental motions between healthy and symptomatic subjects due to torsion.
Lumbar segmental motions were calculated using volume merge method in 3 major planes from 3-dimensional CT reconstructions. Disc degeneration grade was analyzed from MRI using the Thompson's grading method.
All subjects could perform the imaging study without significant increase in pain. No differences were seen in disc degeneration grade or segmental motions between the 2 groups. Segmental motion differences were seen in torsion, lateral bending, and frontal translation based on spinal level.
Current noninvasive CT-based method is feasible for use in healthy and low back pain subjects. Measured segmental motions were similar to other studies in torsion; however, other motions have not been measured previously.
20名30多岁的男性志愿者（10名无症状者和10名慢性下背痛患者）接受被动旋转并进行CT扫描，以确定腰椎节段运动。
确定在疼痛受试者体内测量三维节段运动的可行性。
轴向旋转性脊柱不稳被认为是下背痛的一个潜在原因。以往的研究尚未比较健康受试者和有症状受试者在扭转情况下的三维节段运动。
使用容积合并法从三维CT重建图像中计算出腰椎在3个主要平面上的节段运动。采用汤普森分级法从MRI分析椎间盘退变程度。
所有受试者均能完成影像学检查，且疼痛无明显加重。两组之间在椎间盘退变程度或节段运动方面未见差异。基于脊柱节段水平，在扭转、侧屈和前向平移方面观察到节段运动差异。
目前基于CT的非侵入性方法可用于健康受试者和下背痛患者。测量得到的节段运动在扭转方面与其他研究相似；然而，其他运动此前尚未进行测量。
