CARPAL-TUNNEL - MR IMAGING .1. NORMAL ANATOMY
CARPAL-TUNNEL - MR IMAGING .1. NORMAL ANATOMY
复制标题
DOI：
10.1148/radiology.171.3.2717746
复制
发表时间：
1989-06-01
期刊：
影响因子：
19.7
通讯作者：
BONAKDARPOUR, A
中科院分区：
文献类型：
--
作者：
MESGARZADEH, M;SCHNECK, CD;BONAKDARPOUR, A
为了将磁共振 (MR) 图像显示的腕管重要结构与大体解剖结构联系起来，作者对 20 名正常志愿者和 9 具尸体的手腕进行了成像。尸体标本在成像的同一平面上被切片，另外三个标本也被解剖。解剖结构与成像形态直接相关。轴向图像很好地描绘了腕管的骨壁和韧带壁。正中神经界限清楚，信号强度适中。在某些情况下，它被脂肪包围，但始终被特定的肌腱束缚。当尺神经和动脉穿过盖永管并分为浅支和深支时，可以看到尺神经和动脉。冠状图像允许三角纤维软骨以及桡侧和尺侧副韧带的最佳可视化。定量研究表明，正常正中神经在腕管内的尺寸并没有显着增加，但在豌豆骨水平处确实变得更加扁平。正常的屈肌支持带可能有轻微的手掌弯曲。
To correlate the important structures of the carpal tunnel demonstrated on magnetic resonance (MR) images with gross anatomy, the authors imaged the wrists of 20 normal volunteers and nine cadavers. The cadaver specimens were sectioned in the same planes in which they were imaged, and three other specimens were dissected. The anatomy was directly correlated with the imaged morphology. Axial images delineated well the bone and ligament walls of the carpal tunnel. The median nerve was well delimited and of moderate signal intensity. It was surrounded in some cases by fat but was consistently bound by specific tendons. The ulnar nerve and artery were visualized as they traversed the Guyon canal to their division into superficial and deep branches. Coronal images permitted optimal visualization of the triangular fibrocartilage and the radial and ulnar collateral ligaments. Quantitative studies indicated that the normal median nerve does not significantly increase in size within the carpal tunnel but does become more flattened at the level of the pisiform bone. The normal flexor retinaculum may have a slight palmar bowing.