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中文摘要：
目的：测量肱骨近端骨折患者的肱骨头纵轴长度，并评价AO肱骨近端内固定锁定系统（ proximal humerus internal locking osteosynthesis system，PHILOS）结构螺钉的置入情况。方法：回顾性分析北京大学人民医院2007年1月至2014年2月使用PHILOS接骨板治疗的肱骨近端骨折患者117例，根据性别分组分别测量肱骨头纵轴长度，根据术后肩关节正位X线片评价结构螺钉的置入情况并计算结构螺钉的置入率。结果：入选患者117例，男性40例，女性77例；男性患者肱骨头纵轴长度为（47．64±3．44） mm，支撑螺钉置入率为52．5％；女性患者肱骨头纵轴长度平均为（42．46±3．21） mm，支撑螺钉置入率为32．5％，男性组与女性组在肱骨头纵轴长度和结构螺钉置入率方面差异具有统计学意义（P＜0．05）。结论：PHILOS接骨板用于肱骨近端骨折治疗，结构螺钉置入率低，特别是女性，可以在中国人解剖学数据基础上予以改良。
英文摘要：
Objective：To measure vertical axis length of humerus head in patients with proximal hu-meral fractures and to evaluate the use of structure screws in proximal humerus internal locking osteosyn-thesis system （ PHILOS） .Methods：From January 2007 to February 2014,117 patients with proximal hu-merus fracture were treated by PHILOS plate.Preoperatively, all the patients tookanteroposterior X-ray of shoulder, and the vertical axis length of humerus head were measured, and the use of structure screws in PHILOS plate was observed.Results： There were 40 male and 77 female patients; The vertical axis length of humerus head in male patients was （47.64 ±3.44） mm, and the rate of structure screw use was 52.5%;The vertical axis length of humerus head in female patients was （42.46 ±3.21） mm, and the rate of structure screw use was 32 .5%.The vertical axis length of humerus head and the rate of structure screw use had significant difference in the male and female groups （P〈0.05）.Conclusion：The rate of structure screw use was low in the treatment of proximal humerus fracture by PHILOS plate, especially for women.We should improve the design of plate according to the anatomical characteristics of Chinese.
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