强直性脊柱炎患者 X 线检査到底看的是什么?

2021-12-26 黄闰月 风湿闰月说

当我们需要诊断强直性脊柱炎时,一个好的检査方法是必不可少的,而其中最常用的检查方法莫过于X线检查。

当我们需要诊断强直性脊柱炎时,一个好的检査方法是必不可少的,而其中最常用的检查方法莫过于X线检查。

什么是X线检查?

X线检查是基于X射线的穿透性、荧光效应等特点发展而来的检查,是影像检查中最常使用和最基本的检查。

X 线检查的优点在于操作简便,价格低廉,也可做多角度的观察,得出结果较快。

(图源:摄图网)

然而, X 线平片对关节软骨、半月板以及滑膜、韧带、肌腱等软组织显示不清。

此外,X线平片将三维的人体结构投射到二维平面成像,缺失了许多结构相关的信息。

提醒:X线有潜在致畸风险,育龄期患者需特别注意。

强直的X线评估标准

0级:骶髂关节边界明显,无狭窄性病变或增宽等表现;

I级:骶髂关节出现骨质疏松、轻微骨质侵蚀等情况,边界较清晰,且关节间隙呈增宽病变;

(图源:摄图网)

Ⅱ级:骶髂关节面明显破坏,边界不清,存在骨质侵蚀或囊性病变;

Ⅲ级:X线提示关节有骨质破坏及重建形成,边界不清,囊性病变明显,且关节间隙狭窄;

V级:检查提示关节呈硬化性病变,骨质密度明显增加,未见关节间隙或间隙基本消失。

强直的X线表现

01 骶髂关节

早期表现为骶髂关节下2/3斑点状或斑块状骨质脱钙、边缘模糊、软骨下轻度硬化、偶有串珠状阴影,关节间隙不规划增宽。

中期表现侵犯整个关节,关节面呈鼠咬状或虫蚀状,边缘呈锯齿状、间隙进一步扩大,硬化带增宽、但界限模糊,病变静止后间隙变窄。

晚期关节间隙融合,消失甚至有粗大骨小梁通过。此期伴有明显的脊柱改变。

02 脊柱

早期改变见于上腰椎或胸腰椎交界处,表现为椎体骨质疏松,关节突间关节模糊、消失,侧位椎体前缘失去正常凹陷而趋向方形,病变进展骨质琉松更明显、椎间盘纤维环及椎旁韧带钙化,初为零星状,最后呈连续“竹节状”强直,椎间隙正常或变窄,小关节间翻带钙化位于正位线上为两多平行的纵行致密带,棘上及棘间韧带钙化表现为沿棘突间走行的单条正中致密带。三条纵向的并列的致密带影酷似长发辫样或轨道状。

03 髋关节

股骨头骨质疏松、糜烂、破坏,关节边缘可大量骨质增生、关节间隙模糊、狭窄甚至消失。

参考文献:

[1]王建军,郭喜元.强直性脊柱炎的X线与CT诊断[J].基层医学论坛,2013:101-102.

[2]朱正斌,董江宁.47例强直性脊柱炎X线分析[J].安徽卫生职业技术学院学报,2006:88-89.

[3]张美凤,黄鸿斌,高允珍.强直性脊柱炎的X线诊断[J].医学信息(下旬刊),2011:265-265.

专家介绍

黄闰月

中西医结合临床医学教授

博士生导师  

国医大师李济仁教授学术传承人,广东省中医院风湿免疫研究团队负责人,中华中医药学会免疫分会青年副主委,广东省中医药学会风湿病专委会副主委,国家公派荷兰访问学者,广东省杰出青年医学人才,广东省中医院拔尖人才,首届广州市科普名师。

擅长:中西医结合诊治痛风、类风湿关节炎、强直性脊柱炎、银屑病关节炎、系统性红斑狼疮、干燥综合征等风湿免疫病。

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    2022-04-01 zywlvao
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    2022-01-08 ms5000000518166734

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    0

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    2022-01-05 ms5000000518166734

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    0

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    2022-01-02 ms2000000725743781

    很好,学习了

    0

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强直性脊柱炎(AS)是一种炎症性风湿性疾病,代表SPA疾病组的终末表型。目前的基于人群的队列研究表明,AS使淀粉样变性的风险增加6倍。