Murata M, Morio Y, Kuranobu K
Department of Orthopedic Surgery, Tottori University, School of Medicine, Yonago, Japan.
Arch Orthop Trauma Surg. 1994;113(6):297-301. doi: 10.1007/BF00426175.
We analyzed disc space height, angular displacement, tilting movement, and horizontal displacement in 109 patients with low back pain and/or sciatica, on plain radiographs of the lumbar spine. These parameters were compared with the grade of disc degeneration as evaluated by magnetic resonance imaging with the aim of studying lumbar segmental instability. Disc space height decreased in proportion to the grade of disc degeneration. Angular displacement was significantly less with severe disc degeneration, accompanied by a tendency to stabilization of the motion segment. Tilting movement and horizontal displacement did not correlate with the grade of disc degeneration. Lumbar segmental instability was recognized at all levels even in individuals who appeared to be normal or to have mild disc degeneration. The incidence of lumbar segmental instability at the L3-4 level was significantly higher in patients with normal discs or mild disc degeneration. At the L4-5 and L5-S levels it did not differ between different grades of disc degeneration.
我们在109例腰痛和/或坐骨神经痛患者的腰椎X线平片上分析了椎间盘间隙高度、角位移、倾斜运动和水平位移。将这些参数与通过磁共振成像评估的椎间盘退变程度进行比较，目的是研究腰椎节段性不稳定。椎间盘间隙高度随椎间盘退变程度成比例降低。严重椎间盘退变时角位移明显减小，同时运动节段有稳定趋势。倾斜运动和水平位移与椎间盘退变程度无关。即使在看似正常或有轻度椎间盘退变的个体中，所有节段均存在腰椎节段性不稳定。正常椎间盘或轻度椎间盘退变患者中，L3-4节段腰椎节段性不稳定的发生率明显更高。在L4-5和L5-S节段，不同程度的椎间盘退变之间无差异。
