Jit I, Kaur H
Am J Phys Anthropol. 1986 May;70(1):97-103. doi: 10.1002/ajpa.1330700114.
The incidence and size of the rhomboid fossa were studied in paired clavicles of North Indians obtained from 20 neonates, 60 children, and 789 adult bodies of known age and sex on which postmortem examinations had been performed by the senior author (except in cases of neonates). The fossa was absent in the newborns but was present bilaterally in 44% of male and 54% of female children below 18 years of age and in 16.5% of male and 20.8% of female children unilaterally. Statistically the sexual differences were not significant (P greater than 0.05). In the adults, the incidence of bilateral fossa was 58.70% in males and 54.14% in females and a unilateral fossa was seen in 13.29% of males and 16.56% of females, but the sexual difference in both cases was insignificant (P greater than 0.05). However, in unilateral cases, the incidence of the fossa was greater on the right than on the left side in both male (P less than 0.001) and female (P less than 0.001) bones. Although racial differences cannot be ruled out, no sexual or side differences in the incidence of the fossa could be found. Factors responsible for creating a deep fossa unilaterally are not understood.
对20例新生儿、60例儿童以及789具已知年龄和性别的成人尸体（新生儿除外）的成对锁骨进行研究，观察菱形窝的发生率和大小，这些尸体均由资深作者进行过尸检。新生儿中未见菱形窝，但在18岁以下儿童中，44%的男性和54%的女性双侧出现菱形窝，16.5%的男性和20.8%的女性单侧出现菱形窝。统计学分析显示，性别差异不显著（P>0.05）。在成年人中，双侧菱形窝的发生率男性为58.70%，女性为54.14%；单侧菱形窝的发生率男性为13.29%，女性为16.56%，但两种情况的性别差异均不显著（P>0.05）。然而，在单侧病例中，男性（P<0.001）和女性（P<0.001）骨骼右侧菱形窝的发生率均高于左侧。尽管不能排除种族差异，但未发现菱形窝发生率存在性别或左右侧差异。造成单侧深菱形窝的因素尚不清楚。
