Sagerman S D, Zogby R G, Palmer A K, Werner F W, Fortino M D
Hand Surgery Associates, Arlington Heights, IL 60005, USA.
J Hand Surg Am. 1995 Jul;20(4):597-601. doi: 10.1016/S0363-5023(05)80275-8.
To determine the congruency of the distal radioulnar joint, 100 standardized normal wrist x-ray films were made and the following measurements taken: ulnar seat inclination, sigmoid notch inclination, and ulnar variance. The inclination angles were different in all but two cases. Relative to the long axis of the ulna, the sigmoid notch inclination averaged 7.7 degrees and the ulnar seat inclination averaged 21.0 degrees. There was a moderate correlation between the two inclination angles as well as between both sigmoid and ulnar seat inclination and ulnar variance. The data show that a wide variation between the inclination of the sigmoid notch and ulnar seat exists, which may explain why symptomatic articular incongruity can occur following ulnar shortening.
为确定桡尺远侧关节的一致性，制作了100张标准化的正常腕部X光片，并进行了以下测量：尺骨窝倾斜度、乙状切迹倾斜度和尺骨变异。除两例情况外，所有倾斜角度均不同。相对于尺骨长轴，乙状切迹倾斜度平均为7.7度，尺骨窝倾斜度平均为21.0度。两个倾斜角度之间以及乙状切迹和尺骨窝倾斜度与尺骨变异之间均存在中度相关性。数据表明，乙状切迹和尺骨窝倾斜度之间存在很大差异，这可能解释了尺骨缩短后为何会出现有症状的关节不协调。
