近几年来 ,笔者对每期新入学学员训练情况进行跟踪调查 ,发现胫骨应力骨折有逐年增加的趋势 ,现将调查结果报道如下。1　对象与方法1 .1　对象 :1 996年 9月～ 1 999年 1 1月 ,考入军校的地方学员5 86名。年龄 1 8～ 2 0岁 ,均为男生。1 .2　方法 :通过问卷 ,向指挥员了解并直? In recent years, the author of each new enrollment trainees follow-up survey found that tibial fractures have increased year by year trend, the findings are reported below. 1 Subjects and methods 1.1. Subjects: September 1996 ~ January 1999 1 January, admitted to the cadets 5,886 local students. Age 1 8 ~ 20 years old, are boys. 1.2 Methods: Through the questionnaire to the commander to understand and straight?