Wetherell R G, Amis A A, Heatley F W
Orthopaedic Academic Unit, Rayne Institute, St. Thomas' Hospital, London, England.
J Bone Joint Surg Br. 1989 May;71(3):447-51. doi: 10.1302/0301-620X.71B3.2722939.
Using dried bones which could be tilted and rotated, we assessed the accuracy of published radiographic methods for measuring the migration of prosthetic acetabular components and compared the results with a new method. The new line linking acetabular margins was significantly more accurate for proximal migration than the teardrop, the sacroiliac line or the sacroiliac-symphysis line. For medial migration, a new line tangential to the brim and through the horizontal mid-point of the obturator foramen was more accurate than Köhler's line, the ilio-ischial line or the iliopubic line. In combination, the two new lines can give a more accurate assessment of acetabular erosion than previous methods, since they are less affected by the differences in rotation commonly found in a series of radiographs.
我们使用可倾斜和旋转的干骨，评估了已发表的用于测量人工髋臼组件移位的放射学方法的准确性，并将结果与一种新方法进行了比较。连接髋臼边缘的新线在测量近端移位时比泪滴线、骶髂线或骶髂-耻骨联合线显著更准确。对于内侧移位，一条与髋臼边缘相切并穿过闭孔水平中点的新线比科勒线、髂坐骨线或髂耻骨线更准确。综合来看，这两条新线比以前的方法能更准确地评估髋臼侵蚀情况，因为它们受一系列X线片中常见的旋转差异影响较小。
