Pichler W, Windisch G, Schaffler G, Rienmüller R, Grechenig W
Department of Traumatology, Anatomic Institute, and Department of Radiology, Medical University of Graz, Graz, Austria.
J Hand Surg Eur Vol. 2009 Oct;34(5):598-602. doi: 10.1177/1753193409101471.
The aims of this study were to measure the size of Lister's Tubercle, the extent of the extensor pollicis longus (EPL) groove and the dihedral angle of the distal dorsal radius. Computer tomography scans of 30 forearms were performed by using a 64-slice Siemens SOMATOM Sensation CT system (Resolution 0.6 mm). DICOM raw data were calculated to 3D by MIMICS software (Materialise, Leuven, Belgium). The size of Lister's Tubercle varied from 1.4 to 6.6 mm (average 3.3 mm) in height radial to the tubercle, and from 5.6 to 18.6 mm (average 13.2 mm) in length. The depth of the EPL groove varied from 0.6 to 3.2 mm (average 1.6 mm). The height on the ulnar side, between the depth of the groove and the tip of the tubercle, varied from 2.2 to 5.8 mm (average 3.4 mm). The dihedral angle of the distal dorsal radius varied from 110 degrees to 135 degrees (average 123 degrees). The variations in height of Lister's Tubercle and in depth of the EPL groove are considerable. This needs to be taken into account when performing volar plating of distal radius fractures otherwise screws may inadvertently penetrate the dorsal cortex of the radius potentially leading to EPL rupture.
本研究的目的是测量李斯特结节的大小、拇长伸肌（EPL）沟的范围以及桡骨远端背侧的二面角。使用64层西门子SOMATOM Sensation CT系统（分辨率0.6毫米）对30例前臂进行计算机断层扫描。通过MIMICS软件（Materialise，比利时鲁汶）将DICOM原始数据计算为三维数据。李斯特结节在结节径向高度上从1.4毫米至6.6毫米不等（平均3.3毫米），长度从5.6毫米至18.6毫米不等（平均13.2毫米）。EPL沟的深度从0.6毫米至3.2毫米不等（平均1.6毫米）。在沟的深度与结节尖端之间的尺侧高度从2.2毫米至5.8毫米不等（平均3.4毫米）。桡骨远端背侧的二面角从110度至135度不等（平均123度）。李斯特结节高度和EPL沟深度的变化相当大。在进行桡骨远端骨折掌侧钢板固定时需要考虑到这一点，否则螺钉可能会无意中穿透桡骨的背侧皮质，潜在地导致EPL断裂。
