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目的 :对照游离型腰椎间盘突出的手术情况与术前CT表现 ,探讨CT诊断游离型腰椎间盘突出的参考指标。方法 :选择 2 8例经手术证实的游离型腰椎间盘突出症患者的术前CT片进行观测 ,另随机选择 2 8例非游离型患者的术前CT片做对照组。测量最大脱出物平面的髓核脱出率及突出物的突出层距。结果 :游离型组中髓核脱出率≥ 40 %者共 2 3例 ,占 82 1% ,与对照组相比有显著性意义 (P <0 0 5 )。突出物的突出层距为 10 12±1 2 1mm ,明显大于对照组 (P <0 0 1)。结论 :髓核脱出率 >40 % ,并且突出物的突出层距均数 +3mm(即 13mm)可做为游离型腰椎间盘突出症的CT诊断参考指标
OBJECTIVE: To compare the surgical findings and CT findings of free lumbar disc herniation and to explore the reference indexes of CT diagnosis of lumbar disc herniation. Methods: Twenty-eight patients with surgically-proven lumbar disc herniation underwent preoperative CT scan. Preoperative CT scan of 28 non-free patients were randomly selected as the control group. Measure the maximum prolapse plane of the prolapse of the nucleus pulposus and prominent protruding layer distance. Results: In the free group, the rate of nucleus pulposus was 40% or more, accounting for 82.1%, which was significantly higher than that of the control group (P <0.05). The protruding layer spacing of the protrusions was 10 12 ± 1 2 1mm, which was significantly larger than that of the control group (P <0.01). CONCLUSION: The rate of nucleus pulposus is more than 40%, and the mean value of prominent layer thickness + 3mm (13mm) can be used as a reference for CT diagnosis of free lumbar disc herniation