MRI in revealing knee injury of recruits coming from different altitudes caused by physical training at high altitudes
XU Qiang1,ZHAO Yongdong1,CHEN Zhuhong1,CHEN Hailong1, DU Pang2
1.Department of Radiology, Hospital of Gansu People’s Armed Police Forces, Lanzhou 730050, China; 2. Department of Radiology, Fourth Military Medical University, Tangdu Hospital, Xi’an 710038,China
Abstract：Objective To study comparatively the MRI features of knee injuries caused by physical training at high altitudes in different stage in recruits coming from different altitudes and provide a theoretical basis for reducing the incidence of knee injuries. Methods 120 recruits were divided into two groups: low-altitude group and high-altitude group. Then, we observed the lesions of their right knees’ joint in different stages including cortical bone, bone marrow, cartilage, meniscus, ligaments and articular cavity by examining with 1.5T MRI in the first three months of training. Results (1) The detectable rate of low-altitude group’s bone marrow edema and joint effusion in the first stages and second stages(first stage 85% and 65%,second stage 91.7% and 86.7%) were all higher than that of high-altitude group’s (first stage 46.7% and 33.3%,second stage 71.7%and 65%;P<0.01).(2)The detectable rate of low-altitude group’s meniscus injury in the second and third stages (second stage 16.7%,third stage 20%)were all higher than that of high-altitude group’s (second stage 1.7%,third stage 3.3%;P<0.01). (3)The differences in the detectable rates of both groups’ cortical bone, cartilage, ligaments and soft tissue injury in different stages were not statistically significant. Conclusions The injury rate in recruits from low altitude is higher than that in recruits from high altitude. Therefore, it is necessary to develop protective and scientific strategies to reduce the chances of injury’s occurrence.
徐强, 赵永东, 陈柱鸿, 陈海龙, 杜滂. 不同地区新兵在高海拔地区体能训练致膝关节损伤的MRI研究[J]. 武警医学, 2015, 26(8): 776-779.
XU Qiang,ZHAO Yongdong,CHEN Zhuhong,CHEN Hailong, DU Pang. MRI in revealing knee injury of recruits coming from different altitudes caused by physical training at high altitudes. Med. J. Chin. Peop. Armed Poli. Forc., 2015, 26(8): 776-779.
2015, Vol. 26 
