論文

国際誌
2018年5月

Multivariate analysis of variations in intrinsic foot musculature among hominoids.

Journal of anatomy
  • Motoharu Oishi
  • ,
  • Naomichi Ogihara
  • ,
  • Daisuke Shimizu
  • ,
  • Yasuhiro Kikuchi
  • ,
  • Hideki Endo
  • ,
  • Yumi Une
  • ,
  • Satoshi Soeta
  • ,
  • Hajime Amasaki
  • ,
  • Nobutsune Ichihara

232
5
開始ページ
812
終了ページ
823
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/joa.12780

Comparative analysis of the foot muscle architecture among extant great apes is important for understanding the evolution of the human foot and, hence, human habitual bipedal walking. However, to our knowledge, there is no previous report of a quantitative comparison of hominoid intrinsic foot muscle dimensions. In the present study, we quantitatively compared muscle dimensions of the hominoid foot by means of multivariate analysis. The foot muscle mass and physiological cross-sectional area (PCSA) of five chimpanzees, one bonobo, two gorillas, and six orangutans were obtained by our own dissections, and those of humans were taken from published accounts. The muscle mass and PCSA were respectively divided by the total mass and total PCSA of the intrinsic muscles of the entire foot for normalization. Variations in muscle architecture among human and extant great apes were quantified based on principal component analysis. Our results demonstrated that the muscle architecture of the orangutan was the most distinctive, having a larger first dorsal interosseous muscle and smaller abductor hallucis brevis muscle. On the other hand, the gorilla was found to be unique in having a larger abductor digiti minimi muscle. Humans were distinguished from extant great apes by a larger quadratus plantae muscle. The chimpanzee and the bonobo appeared to have very similar muscle architecture, with an intermediate position between the human and the orangutan. These differences (or similarities) in architecture of the intrinsic foot muscles among humans and great apes correspond well to the differences in phylogeny, positional behavior, and locomotion.

リンク情報
DOI
https://doi.org/10.1111/joa.12780
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29327389
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5879964
ID情報
  • DOI : 10.1111/joa.12780
  • PubMed ID : 29327389
  • PubMed Central 記事ID : PMC5879964

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