Five-fingered hand (5-FH) with complete developed phalanges is a rare phenotype observed so far only in humans and characterized by three phalanges of the 1st ray. A long-lasting, debated question is if the missing element of the normal hand 1st ray is the metacarpal or the phalanx. In this study, comparative X-rays morphometry of long bones in normal and 5-FH is carried out with the aim to face this question through homology analysis of long bone segments in the transverse and longitudinal line of normal hand and 5-FH.
Normal and five-fingered hand: comparative X-ray morphometry in the post-natal age / M.P. Bondioni, L. Casati, A.G. Salvi, A. Minini, E. Zini, U.E. Pazzaglia. - In: FOLIA MORPHOLOGICA. - ISSN 1644-3284. - (2020). [Epub ahead of print] [10.5603/FM.a2020.0074]
Normal and five-fingered hand: comparative X-ray morphometry in the post-natal age
L. CasatiSecondo
;
2020
Abstract
Five-fingered hand (5-FH) with complete developed phalanges is a rare phenotype observed so far only in humans and characterized by three phalanges of the 1st ray. A long-lasting, debated question is if the missing element of the normal hand 1st ray is the metacarpal or the phalanx. In this study, comparative X-rays morphometry of long bones in normal and 5-FH is carried out with the aim to face this question through homology analysis of long bone segments in the transverse and longitudinal line of normal hand and 5-FH.
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