摘要目的:调查全国范围2015至2017年髋/膝关节置换手术量及因假体周围感染（PJI）接受翻修的比例及其病例资料。方法:流行病学调查。于2018年11月至2019年12月采用方便抽样方式及自行设计的问卷调查全国41家医院；根据骨骼肌肉感染协会的标准诊断PJI。通过检索各医院住院患者数据库获得PJI患者的资料。从临床记录中提取问卷条目。收集后计算PJI翻修手术的比例，比较髋/膝PJI翻修患者临床资料的差异。结果:全国36家医院（87.8%）报告了数据，2015至2017年共实施髋膝关节置换术99 791例次，因PJI翻修946例次（0.96%）。髋PJI总翻修率为0.99%（481/48 574），2015至2017年分别为0.97%（135/13 963）、0.97%（153/15 730）和1.07%（193/17 881）；膝PJI总翻修率为0.91%（465/51 271），2015至2017年分别为0.90%（131/14 650）、0.88%（155/17 693）和0.94%（179/18 982）；黑龙江（2.2%，40/1 805）、福建（2.2%，45/2 017）、江苏（2.1%，85/3 899）、甘肃（2.1%，29/1 377）和重庆（1.8%，64/3 523）报告的翻修率较高。结论:2015至2017年全国34家医院总体感染翻修率为0.96%；其中髋PJI翻修率略高于膝PJI；不同地区医院翻修率存在差异。

abstractsObjective:To investigate the rate of periprosthetic joint infection (PJI) revision surgeries and clinical information of hip-/knee- PJI cases nationwide from 2015 to 2017 in China.Methods:An epidemiological investigation. A self-designed questionnaire and convenience sampling were used to survey 41 regional joint replacement centers nationwide from November 2018 to December 2019 in China. The PJI was diagnosed according to the Musculoskeletal Infection Association criteria. Data of PJI patients were obtained by searching the inpatient database of each hospital. Questionnaire entries were extracted from the clinical records by specialist. Then the differences in rate of PJI revision surgery between hip- and knee- PJI revision cases were calculated and compared.Results:Total of 36 hospitals (87.8%) nationwide reported data on 99 791 hip and knee arthroplasties performed from 2015 to 2017, with 946 revisions due to PJI (0.96%). The overall hip-PJI revision rate was 0.99% (481/48 574), and it was 0.97% (135/13 963), 0.97% (153/15 730) and 1.07% (193/17 881) in of 2015, 2016, 2017, respectively. The overall knee-PJI revision rate was 0.91% (465/51 271), and it was 0.90% (131/14 650), 0.88% (155/17 693) and 0.94% (179/18 982) in 2015, 2016, 2017, respectively. Heilongjiang (2.2%, 40/1 805), Fujian (2.2%, 45/2 017), Jiangsu (2.1%, 85/3 899), Gansu (2.1%, 29/1 377), Chongqing (1.8%, 64/3 523) reported relatively high revision rates.Conclusions:The overall PJI revision rate in 34 hospitals nationwide from 2015 to 2017 is 0.96%. The hip-PJI revision rate is slightly higher than that in the knee-PJI. There are differences in revision rates among hospitals in different regions.