Carbon R, Sambrook P N, Deakin V, Fricker P, Eisman J A, Kelly P, Maguire K, Yeates M G
Australian Institute of Sport, Bruce, ACT.
Med J Aust. 1990 Oct 1;153(7):373-6. doi: 10.5694/j.1326-5377.1990.tb125491.x.
To investigate whether stress fractures occurring in élite female athletes are related to reductions in bone mineral density (BMD), we measured BMD in nine athletes with such fractures and nine athletes without fractures who were matched for age, weight, height and sport. BMD was measured in three regions: upper limbs (distal radius), axial skeleton (lumbar spine) and lower limbs (femoral neck) by photon absorptiometry. The number of menses per year was significantly less (P less than 0.04) and the age of menarche was significantly delayed (mean +/- SD; 16.1 +/- 0.4 v. 14.4 +/- 1.5 years, P less than 0.02) in the fracture group compared with the non-fracture group. There was no significant difference in BMD between the two groups at any of the measurement sites. Moreover although the fractures occurred mainly in lower limb bones, at sites characterised by predominantly cortical bone, all athletes had femoral neck BMD values within the 95% confidence limits for normal non-athletic women. We conclude that stress fractures in élite female athletes are largely independent of BMD.
为了研究精英女性运动员发生的应力性骨折是否与骨矿物质密度（BMD）降低有关，我们对9名患有此类骨折的运动员和9名未骨折的运动员进行了BMD测量，这些未骨折的运动员在年龄、体重、身高和运动项目方面与骨折运动员相匹配。通过光子吸收法在三个部位测量BMD：上肢（桡骨远端）、中轴骨骼（腰椎）和下肢（股骨颈）。与非骨折组相比，骨折组每年的月经次数显著减少（P<0.04），月经初潮年龄显著延迟（均值±标准差；16.1±0.4岁对14.4±1.5岁，P<0.02）。两组在任何测量部位的BMD均无显著差异。此外，尽管骨折主要发生在下肢骨骼，以皮质骨为主的部位，但所有运动员的股骨颈BMD值均在正常非运动员女性的95%置信区间内。我们得出结论，精英女性运动员的应力性骨折在很大程度上与BMD无关。
