关于脊椎骨骺骨软骨病的病因学术界提出了很多假说，但是其真正的原因尚不清楚。
Summary of Background Data. Many theories have been proposed for the etiology of Scheuermann disease, but the true cause remains unclear.
结论：较之正常人更短的胸骨可能与脊椎骨骺骨软骨病的出现有关。
Conclusion. The smaller length of sternum than the normal has a possible correlation with the appearance of Scheuermann disease.
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