Tsunoda K, Nakamura R, Watanabe K, Horii E, Miura T
Department of Orthopaedic Surgery, Branch Hospital, Nagoya University, Japan.
J Hand Surg Br. 1993 Jun;18(3):289-93. doi: 10.1016/0266-7681(93)90043-f.
Changes in carpal alignment following radial osteotomy were studied in 30 patients with Kienböck's disease. The carpal height ratio and carpal-ulnar distance ratio were significantly less in wrists with Kienböck's disease than unaffected wrists. This observation implies proximal-ulnar translation of the capitate. In addition, the lunate-covering ratio increased significantly, reflecting radial translation of the lunate. Radial osteotomy corrected ulnar translation of the capitate and increased the radial translation of the lunate, thus increasing the lunate-covering ratio. The increased lunate-covering ratio is believed to increase the area of distribution of the axial load through the lunate by increasing the contact area with the radius. The satisfactory clinical outcome of radial osteotomy is believed to be due to this effect on carpal alignment.
对30例月骨无菌性坏死患者进行了桡骨截骨术后腕骨排列变化的研究。月骨无菌性坏死患者手腕的腕高比和腕尺距离比明显低于未受影响的手腕。这一观察结果提示头状骨向近端尺侧移位。此外，月骨覆盖比显著增加，反映了月骨向桡侧移位。桡骨截骨术纠正了头状骨的尺侧移位，增加了月骨的桡侧移位，从而提高了月骨覆盖比。据信，增加的月骨覆盖比通过增加与桡骨的接触面积，增加了通过月骨的轴向负荷分布面积。桡骨截骨术令人满意的临床结果据信归因于其对腕骨排列的这种影响。
