Rubin D A, Petropoulou K A, McIntosh J C, Sotereanos D G
Department of Radiology, University of Pittsburgh Medical Center, PA 15213-2582, USA.
Radiology. 1996 Nov;201(2):501-6. doi: 10.1148/radiology.201.2.8888249.
To determine whether a filling defect seen at radiocarpal arthrography represents the volar radioscaphocapitate ligament and to establish how frequently this finding is seen in patients referred for wrist arthrography.
Radiopaque markers were surgically placed along the borders of the radioscaphocapitate ligament in three cadaveric wrist specimens. Each cadaveric wrist was examined at arthrography. Seventy contrast material-enhanced wrist arthrograms were retrospectively reviewed for visualization of the radioscaphocapitate ligament. The arthrographic appearance of the ligament was compared with its reported appearance at dissection, radiography, and magnetic resonance arthrography.
The cadaveric study, together with an analysis of the appearance of the ligament, confirmed that the radioscaphocapitate ligament can be seen as a filling defect at radiocarpal arthrography. Fifty-five (78%) of the 70 clinical arthrograms unequivocally demonstrated the radioscaphocapitate ligament. The ligament was most conspicuous early during the injection, especially with the wrist in ulnar deviation.
The radioscaphocapitate ligament of the wrist can be visualized during routine radiocarpal arthrography. Future studies will need to determine whether abnormalities of the radioscaphocapitate ligament can be diagnosed at arthrography.
确定在桡腕关节造影中所见的充盈缺损是否代表掌侧桡舟头韧带，并确定在接受腕关节造影的患者中该发现的出现频率。
在三个尸体腕关节标本中，沿桡舟头韧带的边界手术放置不透射线的标记物。对每个尸体腕关节进行关节造影检查。回顾性分析70例对比剂增强的腕关节造影图像，以观察桡舟头韧带的显影情况。将韧带在关节造影中的表现与其在解剖、X线摄影和磁共振关节造影中的表现进行比较。
尸体研究以及对韧带外观的分析证实，桡腕关节造影中可将桡舟头韧带视为充盈缺损。70例临床关节造影中有55例（78%）明确显示了桡舟头韧带。在注射造影剂早期，尤其是腕关节尺偏时，韧带最为明显。
在常规桡腕关节造影中可显示腕关节的桡舟头韧带。未来的研究需要确定在关节造影中能否诊断桡舟头韧带异常。
