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Spine J:椎间盘脱出时破出物在椎管内移动模式的大样本研究

2014-09-22 orthowhq 丁香园

当椎间盘内容物,包括髓核,软骨终板,骨块,纤维环等,移位超出椎间盘范围,即发生椎间盘突出。突出的椎间盘游离部分可在椎管内沿着边缘,尾端或外侧方向移动。确定已移动的椎间盘破出物对于正确的手术治疗计划很重要,因破出物类似于肿瘤,血肿和脓肿。 MRI,特别是增强扫描,可作为评估移动椎间盘破出物的方法。尽管椎间盘破出物移动很重要,目前为止,文献中尚无深入探讨其移动模式的报道。 伊朗Tabriz大学医学

当椎间盘内容物,包括髓核,软骨终板,骨块,纤维环等,移位超出椎间盘范围,即发生椎间盘突出。突出的椎间盘游离部分可在椎管内沿着边缘,尾端或外侧方向移动。确定已移动的椎间盘破出物对于正确的手术治疗计划很重要,因破出物类似于肿瘤,血肿和脓肿。

MRI,特别是增强扫描,可作为评估移动椎间盘破出物的方法。尽管椎间盘破出物移动很重要,目前为止,文献中尚无深入探讨其移动模式的报道。

伊朗Tabriz大学医学院放射科的学者进行了一项回顾性影像分析研究,提示椎间盘脱出时破出物在椎管内最常向尾端、旁中央移动,年龄和突出节段为影响因素,文章于2014年9月发表在Spine J上。

该研究纳入1020例连续病例,均为有症状的椎间盘脱出的阿塞拜疆人。包括633例男性患者,387例女性患者,平均年龄46.52岁。分析每例患者轴位和矢状位MRI。

椎间盘内容物从突出部位位置变化,不论连续与否,均视为“移动”。在MRI垂直平面上,移动模式分为近端和尾端,在水平面上,分为中央,旁中央,关节下,椎间孔,椎间孔外(图1,图2)。

图1.jpg

  图1椎间盘破出物的水平(左)和垂直(右)移动分类。

图2.jpg

图2 腰椎间盘脱出患者腰椎MRI矢状位(A和B)和轴位(C-G)像。垂直平面,近端移动(A)和尾端移动(B)模式。水平面上,中央(C),旁中央(D),关节下(E),椎间孔(F)和椎间孔外(G)。

进一步对椎间盘破出物移动模式与年龄,性别,体重指数和突出节段的关系,进行分析。

结果显示,在垂直平面,近端和尾端移动分别占27.8%和72.2%。近端移动病例随年龄和腰椎突出节段增高而增多。尾端移动的椎间盘脱出患者,神经放散痛多于近端移动的病例(78.9% 对 65.1%)。在垂直平面,性别和体重指数与移动模式无明显相关。

在水平面,中央、旁中央、关节下、椎间孔和椎间孔旁移动模式发生率分别为17.3%、74.2%、4.3%、2.5%和1.8%。最年轻的患者组(中位年龄39岁)移动模式中椎间孔类最多见,最年长患者(中位年龄55岁)移动模式中椎间孔旁模式最多见。

神经放散痛在中央中央、旁中央、关节下、椎间孔和椎间孔旁移动模式发生率分别为66.5%、76.8%、88.6%、96%、和27.8%。水平面上,椎间盘破出物移动模式与性别,体重指数或突出节段无明显相关。

上述结果显示,腰椎间盘脱出患者,椎间盘破出物在垂直面上和水平面上最常见的移动模式分别为尾端和旁中央。年龄和突出节段可能影响腰椎间盘破出物的移动模式。

本研究首次采用大样本分析了椎间盘脱出患者椎间盘破出物的移动模式,明确椎间盘破出物在椎管内的位置,有利于术前评估与完善计划。尽管本研究评估了年龄,性别,体重指数和突出节段与移动模式的关系,其他因素对移动模式的影响,尚有待进一步研究。

原始出处

Daghighi MH1, Pouriesa M1, Maleki M1, Fouladi DF2, Pezeshki MZ3, Mazaheri Khameneh R4, Bazzazi AM5.Migration patterns of herniated disc fragments: a study on 1,020 patients with extruded lumbar disc herniation.Spine J. 2014 Sep 1

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    2015-02-17 mgqwxj
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    2015-04-14 zhzhxiang
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    2014-12-30 bugit
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