Itoh K, Miyamoto K, Yamane S
Department of Nuclear Medicine, Hokkaido University School of Medicine.
Rinsho Hoshasen. 1990 Mar;35(3):367-71.
Natural history of bone scan in forty three patients (55 joints) with asymptomatic total hip arthroplasty was evaluated. Bone uptake of 99mTc-MDP in regions of the acetabulum and femoral shaft, except the marginal acetabulum, became normal on one year post-operation. Radiographic detection of clear zone between bone and cement interface was common and increased with time after the arthroplasty. The post-operative natural change observed by radiography and scintigraphy at the site of the roof of acetabulum was statistically significant (p less than 0.01) by the chi-square test. This may imply that differentiation of true mechanical loosening from asymptomatic natural change at the site of the acetabulum in total hip arthroplasty is difficult. Our results presented here may help diagnosis of delayed complications in total hip replacement by bone scan.
对43例（55个关节）无症状全髋关节置换患者的骨扫描自然病程进行了评估。术后1年时，除髋臼边缘外，髋臼和股骨干区域的99mTc-MDP骨摄取恢复正常。骨与骨水泥界面之间透亮区的影像学检测很常见，且在关节置换术后随时间增加。通过卡方检验，髋臼顶部位的X线片和骨闪烁显像观察到的术后自然变化具有统计学意义（p<0.01）。这可能意味着在全髋关节置换术中，很难区分髋臼部位真正的机械性松动与无症状的自然变化。我们在此呈现的结果可能有助于通过骨扫描诊断全髋关节置换术后的延迟并发症。
