Wybier M, Champsaur P, Hamzé B
Service de Radiologie Ostéo-articulaire, Hôpital Lariboisière, Paris.
Ann Radiol (Paris). 1995;38(4):196-200.
Unilateral spondylolytic spondylolisthesis may cause lateral tilt of the overlying spinous processes towards the normal isthmus on PA views. Bilateral spondylolytic spondylolisthesis is generally located at the L5-S1 level. The vertebral shift is usually moderate. Instability at the level of spondylolisthesis may be demonstrated by stress lateral views but is uneasy to quantify. In case of sciatica associated to spondylolisthesis, foraminal stenosis is probably the most frequent cause but foraminal compression of the spinal ganglion is difficult to assess on imaging.
在正位X线片上，单侧峡部裂性腰椎滑脱可导致上位棘突向正常峡部侧方倾斜。双侧峡部裂性腰椎滑脱通常位于L5-S1水平。椎体移位通常为中度。腰椎滑脱水平的不稳定可通过应力位侧位片显示，但难以量化。在与腰椎滑脱相关的坐骨神经痛病例中，椎间孔狭窄可能是最常见的原因，但影像学上难以评估脊神经节的椎间孔受压情况。
