Willauschus W G, Kladny B, Beyer W F, Glückert K, Arnold H, Scheithauer R
Department of Orthopedic Surgery, University of Erlangen-Nürnberg, Germany.
Spine (Phila Pa 1976). 1995 Dec 1;20(23):2493-8. doi: 10.1097/00007632-199512000-00006.
This study analyzed anatomic characteristics of the alar ligaments and the possibility of imaging them with magnetic resonance imaging. Also determined was whether artificial ruptures of the alar ligament can be recognized experimentally.
To determine the ability of magnetic resonance imaging to visualize normal, torn, resected alar ligaments.
There are no studies about computed tomography or magnetic resonance imaging findings of alar ligaments and after anatomic sections. Direct visualization of the complete ligament is not possible for computed tomography. No precise diagnostic method for showing a ruptured alar ligaments has been described. Magnetic resonance imaging seems to be the method of choice for distinguishing between normal and pathologic soft tissue.
Fifteen specimens from accident victims underwent anatomic dissection. In addition, ligaments from three groups were examined: 1) eight volunteers, 2) seven patients, and 3) 17 fresh cadaveric specimen before anatomic exploratory dissection. In seven of these specimens, one ligament was cut to simulate an artificial disruption and magnetic resonance imaging was repeated.
Lesions of the alar ligaments were found in four of 15 prepared specimens. Using magnetic resonance imaging, the alar ligaments could be identified in all volunteers, patients, and specimen except one. No ruptures were found in the 17 specimens. Of the seven resected specimens, all cuts could be demonstrated by magnetic resonance imaging.
Magnetic resonance imaging is useful for showing lesions of the alar ligaments because of a high soft tissue contrast, plane independence imaging, possibility of functional scans, and secondary reconstruction from three-dimensional data sets.
本研究分析了翼状韧带的解剖特征以及用磁共振成像对其进行成像的可能性。还确定了是否能通过实验识别翼状韧带的人工断裂。
确定磁共振成像显示正常、撕裂、切除的翼状韧带的能力。
目前尚无关于翼状韧带及解剖切片后计算机断层扫描或磁共振成像结果的研究。计算机断层扫描无法直接显示完整的韧带。尚未描述显示翼状韧带断裂的精确诊断方法。磁共振成像似乎是区分正常和病理性软组织的首选方法。
对15例事故受害者的标本进行解剖 dissection。此外，对三组韧带进行了检查：1）8名志愿者，2）7名患者，3）17例新鲜尸体标本在解剖探查 dissection 前。在其中7个标本中，切断一条韧带以模拟人工破坏，并重复进行磁共振成像。
在15个制备好的标本中有4个发现了翼状韧带损伤。使用磁共振成像，除1例标本外，在所有志愿者、患者和标本中均能识别出翼状韧带。17个标本中未发现断裂。在7个切除的标本中，所有切口均能通过磁共振成像显示。
磁共振成像因其软组织对比度高、平面独立成像、功能扫描可能性以及从三维数据集进行二次重建的能力，对显示翼状韧带损伤很有用。
