中文摘要：

目的评价解剖型股骨近端髓内钉（ZNN）治疗老年股骨转子间骨折的初步疗效。方法回顾性分析2016年9月至2017年1月北京大学人民医院创伤骨科收治的18例老年股骨转子间骨折患者的治疗过程，Evans-Jensen分型中，Ⅱ型8例，Ⅲ型6例，Ⅳ型骨折4例；所有入组患者均采用闭合牵引复位ZNN内固定术治疗。记录分析患者的手术时间、术中出血量及骨折愈合情况，采用Harris评分系统以及Charnley髋关节功能评分标准评估患髋功能恢复情况。结果18例患者的平均手术时间为（67±21）min，术中出血量为（75±29）ml，住院天数为（14±6）d。末次随访时，12例患者达到骨性愈合的平均时间为（16.0±1.5）w，Harris评分优8例，良4例，优良率100%；Charnley髋关节功能评分标准优6例，良5例，可1例，优良率91.7%。结论解剖型股骨近端髓内钉操作简单，出血少，固定牢固，可作为治疗老年股骨转子间骨折的优选方案。

英文摘要：

Objective To evaluate the clinical efficacy of Zimmer Natural Nail System(ZNN)in the treatment of intertrochanteric fractures in elderly patients.Methods A retrospective study was performed in18cases of elderly intertrochanteric fractures in people's Hospital,peking university from September2016to January2017.According to Evans-Jensen classification,8cases wereⅡ,6Ⅲ,4Ⅳ.All patients were treated with closed reduction and Zimmer Natural Nail System fixation.The operation time,blood loss,time of fracture healing was recorded,the Harris and Charnley scoring system were used to assess hip function.Results The average operation time of18patients was67±21min,the average blood loss was75±29ml,the average hospital stay was14±6d.12cases reach healing with an average time of16.0±1.5weeks,the Harris score was excellent in8cases,good in4cases,with the excellent rate of100%,the Charnley score was excellent in6cases,good in5cases and common in1case,with the excellent rate of91.7%.Conclusion The Zimmer Natural Nail System is a good choice for the treatment of intertrochanteric fractures in elderly patients with simple operation,less blood loss and firm fixation.