Conclusion : Modified T ǒ nnis triple pelvic osteotomy is very effective mothod for hip dysplasia in adolescence .

结论：改进T彲nnis三联截骨术是治疗青少年发育性髋关节发育不良一种更为有效的方法。

Especially gram-negative bacillus drug resistance problem has become a concern of the whole society as a public health problem * At present , the whole world is carrying out a variety of sizes of the bacterial resistance surveillance work . For example , the United States is to establish a national nosocomial infection surveillance system ( NNIS ), the world more than 30 countries involved in the SENTRY antibacterial drug monitoring project , Europe has established the European bacterial resistance surveillance system ( EARSS ), etc. .

特别是革兰阴性杆菌耐药问题已成为全社会共同关注的公共卫生问题。为了控制细菌耐药的产生和蔓延，目前全球都在进行各种规模的细菌耐药监测工作，如美国建立国家级医院感染监测系统（NNIS）、世界30多个国家参与的SENTRY抗菌药物监测项目、欧洲建立了欧洲细菌耐药监测系统（EARSS）等。

Objective : To study the modified T ǒ nnis triple pelvic osteotomy for the treatment of hip dysplasia in adolescence .

目的：报道本科改进T彲nnis术式治疗16例青少年发育性髋关节发育不良。