Doyle W J
Acta Anat (Basel). 1977;99(2):173-7. doi: 10.1159/000144846.
The dependence of the growth and development of the scapula on its functional matrix has been clearly defined by a number of experimental studies. Early modifications of this functional matrix may result in an altered scapular morphology [Howell, 1917]. Further, extreme developmental muscular hypofunction results in an increase in scapular breadth and a decrease in length [Riesenfeld, 1966; Doyle, 1976]. However, these studies have been confined to the scapular growth period and no findings have been published on the effect of scapular hypofunction in adults. The present paper addresses this problem. Adult scapular hypofunction in the rat was produced by unilateral amputation of the upper arm. Statistically significant (p less than 0.001) differences in intraindividual scapular breadth dimensions are reported. Further, an increase in the relative instability of the scapular length dimension was observed. No differences in gross scapular morphology resulted from the hypofunctional condition. It is concluded that the functional matrix of the scapula determines a unique morphology during the course of development. Once established, scapular morphology is relatively fixed and only unstable dimensions such as breadth are predictably responsive to a changed matrix.
多项实验研究已明确了肩胛骨的生长发育对其功能基质的依赖性。这种功能基质的早期改变可能会导致肩胛骨形态改变[豪厄尔，1917年]。此外，极端的发育性肌肉功能减退会导致肩胛骨宽度增加和长度减小[里森费尔德，1966年；多伊尔，1976年]。然而，这些研究仅限于肩胛骨的生长时期，关于成人肩胛骨功能减退的影响尚无相关研究结果发表。本文探讨了这一问题。通过单侧上臂截肢制造大鼠的成人肩胛骨功能减退。报告了个体内肩胛骨宽度尺寸存在统计学显著差异（p小于0.001）。此外，观察到肩胛骨长度尺寸的相对不稳定性增加。功能减退状态并未导致肩胛骨大体形态出现差异。得出的结论是，肩胛骨的功能基质在发育过程中决定了独特的形态。一旦确立，肩胛骨形态相对固定，只有诸如宽度等不稳定尺寸可预测地对改变的基质作出反应。
