为了研究侧弯位与屈曲-伸展位两类平片上腰椎失稳的相互关系,及归纳有关X线征象,作者回顾分析了临床疑诊的300例(依据:长期静承重位腰背痛;可见到或触知腰背阶梯形;有通常所说的失稳)。病人的平均年龄42岁(13～78岁),男125例,女175例。均以大视野影像增强器立位投照100× In order to study the relationship between the lumbar instability of two types of plain and flexion-extension plain films, and to summarize the X-ray findings, the authors retrospectively analyzed 300 cases of suspected clinical suspicion (based on: long-term static bearing low back pain; visible To or touch the back of the ladder; there is commonly referred to instability). The average age of patients 42 years (13 to 78 years), 125 males and 175 females. All large field of vision enhancer position projection 100 ×