Mochizuki Yu, Natsu Koji, Kashiwagi Kenji, Yasunaga Yuji, Ochi Mitsuo
Department of Orthopaedic Surgery, Programs for Applied Biomedicine, Division of Clinical Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
J Shoulder Elbow Surg. 2005 Nov-Dec;14(6):616-9. doi: 10.1016/j.jse.2005.02.016.
The distribution of mineralization in the subchondral bone plate (DMSB) is used as a parameter for individual stress distribution of shoulder joints. We have analyzed 28 shoulder joints of throwing athletes by DMSB of the glenoid with computed tomography osteoabsorptiometry and described their mineralization patterns. The throwing motion imposes a heavy rotational load on the shoulder joint, and this, in turn, may lead to excessive translation of the humeral head on the glenoid. This could explain why the two most frequent density maxima were localized to the anterior and posterior portions of the glenoid. Our finding of a frequent bicentric density distribution of the shoulder joints of throwing athletes should be useful in any future analysis of the relationship between the DMSB and the bone morphology of the glenoid.
软骨下骨板矿化分布（DMSB）被用作肩关节个体应力分布的一个参数。我们通过计算机断层扫描骨吸收测量法对28名投掷运动员的肩关节盂的DMSB进行了分析，并描述了其矿化模式。投掷动作会给肩关节施加巨大的旋转负荷，进而可能导致肱骨头在关节盂上过度平移。这可以解释为什么两个最常见的密度最大值位于关节盂的前部和后部。我们发现投掷运动员肩关节常见的双中心密度分布，这对于未来任何关于DMSB与关节盂骨形态之间关系的分析都应是有用的。
