Stress-strain studies in cadaveric human tendon and an anomaly in the young's modulus thereof (original) (raw)
Abstract
As a part of a continuing effort to quantify certain information about the mechanical characteristics of parts of the human body, the investigators have made experimental measurements of the stress-strain characteristics of the tendons of three muscles of the human upper extremity. These results have been compared to their previous report concerning the tendon of the M. plantaris. One interesting, provocative and peculiar result was that significant differences in strain under load were observed. Those tendons which are apparently subjected to greater total force in normal body use were found to elongate more than those which are apparently not heavily loaded in normal body use, when tested under equal stresses; that is to say, Young's Modulus,E, for the tendons of M. flexor digitorum profundus and superficialis was found to be significantly smaller than_E_ for tendons of M. extensor digitorum communis and M. plantaris.
Sommaire
Poursuivant un effort entrepris pour rassembler une certaine quantité de renseignments sur le caractéristiques mécanique de certaines parties du corps humains les chercheurs ont fait des mesures expérimentales sur les caracteristiques force—élongation des tendons de trois muscles du membre supérieur de l'homme. Ces résultats ont été comparés à ceux d'un rapport précédent concernant les tendons du muscle plantaire grêle. Un résultat intéressant, étonnant et très particulier était que des différences notables dans les élongations dûes à des charges furent observées. On constata en effet que les tendons qui sont apparement soumis à un effort total plus important en usage normal s'allongeaient davantage que ceux soumis à un effort moindre, lorsqu'on les observait sous des tensions identiques, c'est-à-dire que le module d'Young,E, pour les tendons des muscles fléchisseurs communs profond et superficiel des doigts fut trouvé notablement plus petit que la valeur de_E_ pour les tendons du muscle extenseur commun des doigts et du muscle plantaire grêle.
Zusammenfassung
Im Zusammenhang einer umfassenden Untersuchung, die zur Quantifizierung bestimmter Informationen über die mechanische Charakteristik von Teilen des menschlichen Körpers angestellt wurde, führten die Autoren experimentelle Messungen der Belastungs-Dehnungs-Charakteristik der Sehnen von drei Muskeln der menschlichen oberen Extremität durch. Die Ergebnisse wurden mit den früher gemachten angaben über den Musculus pläntäris verglichen. Ein interessantes und eigenartiges Ergebnis war die Beobachtung, daß signifikante Unterschiede in der Dehnung bei Belastung bestehen. Die Sehnen, die im Körper normalerweise wahrscheinlich unter stärkerer Belastung stehen, wurden bei gleicher Testbelastung stärker verlängert als solche, die bei normaler Körperarbeit anscheinend weniger belastet werden. Das bedeutet, daß der Youngsche Modul_E_ der Sehnen des M. flexor digitorum profundis und superficialis beträchtlich kleiner als derjenige der Sehnen des M. extensor digitorum communis und M. plantaris ist.
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Author information
Authors and Affiliations
- Department of Mechanical Engineering, Tulane University, New Orleans, Louisiana, USA
Edward H. Harris (Professor) - Department of Anatomy, Tulane University, New Orleans, Louisiana
Leon B. Walker Jr (Associate Professor) & Bennett R. Bass (Graduate Student in Mechanical Engineering)
Authors
- Edward H. Harris
- Leon B. Walker Jr
- Bennett R. Bass
Additional information
This research was supported, in part, by a grant from the U.S. Department of Health, Education and Welfare, Grant No. NB 04943-01.
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Harris, E.H., Walker, L.B. & Bass, B.R. Stress-strain studies in cadaveric human tendon and an anomaly in the young's modulus thereof.Med. & biol. Engng. 4, 253–259 (1966). https://doi.org/10.1007/BF02474798
- Received: 30 May 1965
- Revised: 10 August 1965
- Issue date: May 1966
- DOI: https://doi.org/10.1007/BF02474798