High-frequency Ultrasonography Observation Of Bilateral Tibial Periosteum In Recruits Of Chinese People’s Armed Police Forces

ObjectiveTo investigate the variety of the tibia periosteal thickness of recruits by high-frequency ultrasonography,and to reveal the rule of tibial stress injury in recruits.MethodsFrom December 2008 to March 2009, fifty recruits were included randomly in the study. The tibial stress injury was monitored by high-frequency ultrasonography weekly.ResultsHigh-frequency ultrasonography showed that the tibia periosteal thickness was plateau from the sixth week to eighth week,and the difference was significant statistically between before training and after the second week(p <0.01); The left tibia periosteal thickness was thicker than the right from the fifth to ninth week, and was significant statistically at the sixth week between right and left tibia (p <0.05);Among the twenty points,5- 15point were more distinct than the others(p <0.01).ConclusionHigh-frequency ultrasonography may be the best method in the early diagnosis of tibial stress injury in recruits. There were three phases of periosteal thickness in training: ascent, plateau and descent. The risk of the left tibia is possibily greater than the right. The site of tibial stress injury was usually at the middle and the junction of the middle and distal third of the tibia.