第一中足骨に見られる中足骨間関節面の出現頻度の集団差

概要

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Several studies have reported the incidence of the intermetatarsal articular facet, which is occasionally observed on the lateral side at the base of the first metatarsal bone, in some human populations. However, these reports did not provide the basic characteristics of the populations such as information on sex, age, laterality, and ethnicity. The purpose of this study is to investigate the incidence of this facet in several populations of different regions, eras, and ethnicity (European Americans, African Americans, modern Japanese, Kamakaura-period Japanese, Edo-period Japanese, and Jomon people) in order to determine the interpopulation, sexual, and left-right differences in this regard and to discuss the causative factors for its occurrence. The presence of this facet was confirmed in all the populations studied. Significant intergroup differences were observed among the European American, African American, and Japanese males and between the European American and Edo-period Japanese females. These results suggest that this facet can be regarded as an autapomorphic trait in humans and that it may be affected by ethnic differences among modern human populations.
国立科学博物館の論文