Analysis of the bone mineral density in patients with stress fractures after training in southwestern area

Objective To provide theoretical basis for the prevention of military training injury by measurement and analysis of bone mineral density( BMD) in patients with stress fractures and normal population. Methods A total of 30 patients with stress fractures,who were from full exercise troops and were treated in our hospital from 2010 to 2012,were selected. Sixty normal soldiers with the same age and gender were also selected. BMD of the lumbar vertebrae( L2-L4) and the bilateral proximal femurs was detected using dual energy X-ray absorptiometry. The results were compared and analyzed. Results In stress fracture group,the mean BMD of L2-L4 and the left and the right proximal femur was 1. 029 ± 0. 087 g /cm2,0.9252 ±0.151 g/cm2,and 0.9481 ±0.115 g/cm2,respectively. And in normal group,the mean BMD was 1. 145 ± 0. 112 g /cm2,1.113 ±0.105 g/cm2,and 1.13 ±0.081 g/cm2,respectively. The significant difference was observed after t-test( P 0. 01). Conclusion BMD in patients with fatigue model stress fractures decreases significantly. If the condition allows,BMD screening should be conducted,in order to formulate military training plan scientifically.