The effect of static muscle forces on the fracture strength of the intact distal radius in vitro in response to simulated forward fall impacts.
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| Title: | The effect of static muscle forces on the fracture strength of the intact distal radius in vitro in response to simulated forward fall impacts. |
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| Authors: | Reeves, Jacob M.1 jakereeves5@gmail.com, Burkhart, Timothy A.1 tburkhar@uwo.ca, Dunning, Cynthia E.1 cdunning@uwo.ca |
| Source: | Journal of Biomechanics. 2014, Vol. 47 Issue 11, p2672-2678. 7p. |
| Subjects: | Static muscle work, Bone fractures, Compressive strength, Simulation methods & models, Disease prevalence, Kinematics |
| Abstract: | The distal radius fracture (DRF) is a particularly dominant injury of the wrist, commonly resulting from a forward fall on an outstretched hand. In an attempt to reduce the prevalence, costs, and potential longterm pain/deformities associated with this injury, in vivo and in vitro investigations have sought to classify the kinematics and kinetics of DRFs. In vivo forward fall work has identified a preparatory muscle contraction that occurs in the upper extremity prior to peak impact force. The present investigation constitutes the first attempt to systematically determine the effect of static muscle forces on the fracture threshold of the distal radius in vitro. Paired human cadaveric forearm specimens were divided into two groups, one that had no muscle forces applied (i.e., right arms) and the other that had muscle forces applied to ECU, ECRL, FCU and FCR (i.e., left arms), with magnitudes based on peak muscle forces and in vivo lower bound forward fall activation patterns. The specimens were secured in a custom-built pneumatic impact loading device and subjected to incremental impacts at pre-fracture (25 J) and fracture (150 J) levels. Similar fracture forces (6565 (866) N and 8665 (5133) N), impulses (47 (6) Ns and 57 (30) Ns), and energies (152 (38)J and 144 (45) J) were observed for both groups of specimens (p > 0.05). Accordingly, it is suggested that, at the magnitudes presently simulated, muscle forces have little effect on the way the distal radius responds to forward fall initiated impact loading. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 97347608 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The effect of static muscle forces on the fracture strength of the intact distal radius in vitro in response to simulated forward fall impacts. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Reeves%2C+Jacob+M%2E%22">Reeves, Jacob M.</searchLink><relatesTo>1</relatesTo><i> jakereeves5@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Burkhart%2C+Timothy+A%2E%22">Burkhart, Timothy A.</searchLink><relatesTo>1</relatesTo><i> tburkhar@uwo.ca</i><br /><searchLink fieldCode="AR" term="%22Dunning%2C+Cynthia+E%2E%22">Dunning, Cynthia E.</searchLink><relatesTo>1</relatesTo><i> cdunning@uwo.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Biomechanics%22">Journal of Biomechanics</searchLink>. 2014, Vol. 47 Issue 11, p2672-2678. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Static+muscle+work%22">Static muscle work</searchLink><br /><searchLink fieldCode="DE" term="%22Bone+fractures%22">Bone fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink><br /><searchLink fieldCode="DE" term="%22Disease+prevalence%22">Disease prevalence</searchLink><br /><searchLink fieldCode="DE" term="%22Kinematics%22">Kinematics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The distal radius fracture (DRF) is a particularly dominant injury of the wrist, commonly resulting from a forward fall on an outstretched hand. In an attempt to reduce the prevalence, costs, and potential longterm pain/deformities associated with this injury, in vivo and in vitro investigations have sought to classify the kinematics and kinetics of DRFs. In vivo forward fall work has identified a preparatory muscle contraction that occurs in the upper extremity prior to peak impact force. The present investigation constitutes the first attempt to systematically determine the effect of static muscle forces on the fracture threshold of the distal radius in vitro. Paired human cadaveric forearm specimens were divided into two groups, one that had no muscle forces applied (i.e., right arms) and the other that had muscle forces applied to ECU, ECRL, FCU and FCR (i.e., left arms), with magnitudes based on peak muscle forces and in vivo lower bound forward fall activation patterns. The specimens were secured in a custom-built pneumatic impact loading device and subjected to incremental impacts at pre-fracture (25 J) and fracture (150 J) levels. Similar fracture forces (6565 (866) N and 8665 (5133) N), impulses (47 (6) Ns and 57 (30) Ns), and energies (152 (38)J and 144 (45) J) were observed for both groups of specimens (p > 0.05). Accordingly, it is suggested that, at the magnitudes presently simulated, muscle forces have little effect on the way the distal radius responds to forward fall initiated impact loading. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jbiomech.2014.05.010 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 2672 Subjects: – SubjectFull: Static muscle work Type: general – SubjectFull: Bone fractures Type: general – SubjectFull: Compressive strength Type: general – SubjectFull: Simulation methods & models Type: general – SubjectFull: Disease prevalence Type: general – SubjectFull: Kinematics Type: general Titles: – TitleFull: The effect of static muscle forces on the fracture strength of the intact distal radius in vitro in response to simulated forward fall impacts. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Reeves, Jacob M. – PersonEntity: Name: NameFull: Burkhart, Timothy A. – PersonEntity: Name: NameFull: Dunning, Cynthia E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: 2014 Type: published Y: 2014 Identifiers: – Type: issn-print Value: 00219290 Numbering: – Type: volume Value: 47 – Type: issue Value: 11 Titles: – TitleFull: Journal of Biomechanics Type: main |
| ResultId | 1 |
