Please use this identifier to cite or link to this item:
|Title:||SOME FUNCTIONAL-ANATOMICAL CHARACTERISTICS OF FINGER MOVEMENTS IN THE HANDS OF HUMAN AND OTHER PRIMATES||Authors:||VAN ZWIETEN, Koos Jaap
|Issue Date:||2013||Source:||Proceedings of the VIIIth Annual All-Russian Research and Practical Conference with International Participation “Health - the Base of Human Potential: Problems and Ways to Solve Them”, p. 518-528||Series/Report no.:||8||Abstract:||In human and non-human primates, at the level of the proximal interphalangeal joint of the finger, the arrangement of tendinous bands in the extensor assembly as well as the shape of the trochlea of the proximal phalanx determine the rate of release of the third phalanx as seen in e.g., ordinary opening and closing of the hand. In view of the importance of skilled forelimb movements and hand- and finger joint coordination, in prehensile kinematics of human and other primates, we therefore analyse the various morphological characteristics of these structures to some detail, viz. in human, non-human primates, and in a primate ‘predecessor’. Our data corroborate most of the previously published conclusions. In the extensor assembly of the finger, intercrossing of the various fanning-out tendon fibres appears to be a prerequisite par excellence for well-defined tendon-bundle formation (also known as “tendon fasciculation and individualization”). Initially, “in opossum, at the dawn of mammalian eruption, the hand emerged with a [less] complex structure of the extensor assembly”. On the other hand, a predominant parallelism of tendon fibres in the extensor assembly results in more homogeneity. Especially small-sized mammalian species, with short gestation periods, appear to display such homogeneities. The fanning out of tendon fibres in the extensor assembly increases as contrahentes digitorum muscles of the hand become more and more incorporated within the interosseus muscles. As hands of mammals with rather long gestation periods lack mm. contrahentes digitorum in particular, it is challenging to consider some relation between tendon fasciculation and individualization in the extensor assemblies, and ontogenetic processes, in human and other primates.||Keywords:||Primate Hands; Human and Other Primates; Finger Anatomy; Extensor Assembly; Proximal Interphalangeal (P.I.P.) Joint; Coordination of Interphalangeal Motion; Adhesive Grip; Prehensile Grips; Lower Arm and Wrist Rotation in Opossum; Manipulative Behaviour; Skilled Finger Movements||Document URI:||http://hdl.handle.net/1942/16141||Link to publication:||http://www.humanpotential.ru/||Rights:||© Saint-Petersburg State University, 2013 © Saint-Petersburg State Polytechnic University, 2013 © Varzin S.A.; Diodorov T.I.; Logotype, 2012||Category:||C1||Type:||Proceedings Paper|
|Appears in Collections:||Research publications|
Show full item record
checked on May 17, 2022
checked on May 17, 2022
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.