Comadoll J L, Sherman R E, Gustilo R B, Bechtold J E
Department of Orthopaedic Surgery, Hennepin County Medical Center, Minneapolis, Minnesota 55415.
J Bone Joint Surg Am. 1988 Mar;70(3):433-8.
On twenty-six cemented total hip replacements that had been followed for an average of 10.4 years (range, nine to thirteen years), a retrospective radiographic study was done to assess dimensional changes in the cross section of the bone in a group of asymptomatic patients. Cortical dimensions were measured on radiographs and were normalized using a radiographic distortion factor that was derived from the width and length of the prosthesis. The data were then analyzed using a least-squares method. Analyses were performed for the men, for the women, and for the combined group. The results for all three groups showed a significant decrease in cortical thickness as well as widening of the medullary canal, but no periosteal expansion.
对26例已随访平均10.4年（范围9至13年）的骨水泥型全髋关节置换病例进行了一项回顾性影像学研究，以评估一组无症状患者骨横截面的尺寸变化。在X线片上测量皮质骨尺寸，并使用从假体宽度和长度得出的放射影像畸变因子进行标准化。然后使用最小二乘法分析数据。对男性、女性及合并组进行了分析。所有三组结果均显示皮质骨厚度显著减小以及髓腔增宽，但无骨膜扩张。
