Garn S M, Babler W J, Burdi A R
Am J Phys Anthropol. 1976 May;44(3):413-6. doi: 10.1002/ajpa.1330440305.
As shown in 91 embryos and fetuses in the 41-235 mm crownrump length, brachymesophalangia-5 may be identified in prenatal time. Although the ratios involving different combinations of length of mid-5 relative to other segments yield different frequencies of BMP-5, the short middle segment of the little finger is already associated with clinodactyly and developmental eccentricity as early as the ninth week of prenatal development.
在41-235毫米顶臀长的91例胚胎和胎儿中发现,产前即可识别出短中指5。尽管涉及中节指骨5与其他节段不同长度组合的比例产生不同频率的短中指5,但早在产前发育的第九周,小指的短中节就已经与小指内翻和发育异常相关。