Clementz B G, Magnusson A
Department of Orthopaedics, Akademiska Sjukhuset, University of Uppsala, Sweden.
Acta Radiol. 1989 Jan-Feb;30(1):75-80.
Accurate assessment of tibial torsion, particularly the rotational deformity of a stabilized tibial fracture, demands precise anatomic landmarks at the proximal and distal measuring sites of the tibia. A fluoroscopic method has been proposed, utilizing the orientation of the femoral condyles and the medial malleolus to constitute two lines of reference. The relevance of using these structures for the assessment was studied while employing fluoroscopy, computed tomography, and the cryosectioning technique in 10 necropsy specimens of the human tibia. In all specimens the lines of reference were determined by each method and the tibial torsion was measured as the angle between the lines. The medial malleolus and the femoral condyles were found to present reliable anatomic landmarks for determination of the lines of reference in all employed techniques. The maximum difference between results obtained with different methods in a given specimen was 5.4 degrees. The average difference between results with two techniques and two observers varied from 1.0 to 1.5 degrees. The reproducibility of the fluoroscopic method, described by the estimated standard error of a single determination, was 1.3 degree.
准确评估胫骨扭转，尤其是稳定型胫骨骨折的旋转畸形，需要在胫骨近端和远端测量部位有精确的解剖标志。有人提出了一种透视方法，利用股骨髁和内踝的方向构成两条参考线。在10例人类胫骨尸检标本中，采用透视、计算机断层扫描和冷冻切片技术研究了使用这些结构进行评估的相关性。在所有标本中，通过每种方法确定参考线，并将胫骨扭转测量为两条线之间的角度。发现在所有使用的技术中，内踝和股骨髁为确定参考线提供了可靠的解剖标志。在给定标本中，不同方法获得的结果之间的最大差异为5.4度。两种技术和两名观察者的结果之间的平均差异在1.0至1.5度之间。透视方法的可重复性，以单次测定的估计标准误差表示，为1.3度。
