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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-23253

Schweizer, A; Moor, B K; Nagy, L; Snedecker, J G (2009). Static and dynamic human flexor tendon-pulley interaction. Journal of Biomechanics, 42(12):1856-1861.

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Abstract

The aim of the study was to investigate the influence of a preceding flexion or extension movement on the static interaction of human finger flexor tendons and pulleys concerning flexion torque being generated. Six human fresh frozen cadaver long fingers were mounted in an isokinetic movement device for the proximal interphalangeal (PIP) joint. During flexion and extension movement both flexor tendons were equally loaded with 40N while the generated moment was depicted simultaneously at the fingertip. The movement was stopped at various positions of the proximal interphalangeal joint to record dynamic and static torque. The static torque was always greater after a preceding extension movement compared to a preceding flexion movement in the corresponding same position of the joint. This applied for the whole arc of movement of 0-105 degrees . The difference between static extension and flexion torque was maximal 11% in average at about 83 degrees of flexion. Static torque was always smaller than dynamic torque during extension movement and always greater than dynamic torque during flexion movement. The kind of preceding movement therefore showed an influence to the torque being generated in the proximal interphalangeal joint. The effect could be simulated on a mechanical finger device.

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6 citations in Web of Science®
3 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
DDC:610 Medicine & health
Language:English
Date:2009
Deposited On:19 Oct 2009 15:02
Last Modified:27 Nov 2013 23:04
Publisher:Elsevier
ISSN:0021-9290
Publisher DOI:10.1016/j.jbiomech.2009.05.025
PubMed ID:19640537

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