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High speed fracture fixation: assessing resulting fixation stability and fastener withdrawal strength

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High speed fracture fixation: assessing resulting fixation stability and fastener withdrawal strength

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dc.contributor.author Prygoski, M. P. es_ES
dc.contributor.author Sánchez Caballero, Samuel es_ES
dc.contributor.author Schmid, S. R. es_ES
dc.contributor.author Lozier, Antony J. es_ES
dc.contributor.author Sellés Cantó, Miguel Ángel es_ES
dc.date.accessioned 2014-02-27T17:20:33Z
dc.date.issued 2013-09
dc.identifier.issn 0148-0731
dc.identifier.uri http://hdl.handle.net/10251/36022
dc.description.abstract A new method of bone fracture fixation has been developed in which fixation darts (small diameter nails/pins) are driven across a fracture site at high velocity with a pneumati- cally powered gun. When fixation darts are inserted oblique to one another, kinematic constraints prevent fragment motion and allow bone healing to progress. The primary aim of this study is to determine if fixation darts can provide reasonable fixation stability compared to bone screws, which were used as a benchmark since they represent a simple, yet well-established, surgical technique. The first objective was to evaluate macro-level stability using different numbers of darts inserted parallel and oblique to each other; ex- perimental comparisons were undertaken in a bone analog model. Experimental results showed fixation darts could not be substituted for screws on a one-to-one basis, but that a plurality of fixation darts provided comparable fixation to two bone screws while allow- ing for faster insertion and damaging less bone. A second objective was to evaluate micro-level stability; a finite element model was created in order to provide a detailed look at the stress state surrounding the fixation darts and the evolution of the fracture gap. Even with relatively weak fixation dart configurations, the fracture gap was main- tained below physiological thresholds for bone healing. Most failures of the fixed frac- tures were attributed to fixation dart pullout from the cancellous structure. The final objective of the study was to characterize this mode of failure with separate fixation dart and screw pullout tests conducted in SawbonesV cancellous foam and fresh porcine can- cellous bone. The results showed that the cancellous foam was an acceptable substitute for real bone and provided a conservative estimate of the fixation darts¿ performance rel- ative to bone screws. A final comparison between experimental and numerically predicted pullout strengths provided confirmation that the model and experiments were consistent. es_ES
dc.description.sponsorship The authors wish to acknowledge the support of Zimmer in developing the technology. The personal support of Dr. Michael Hawkins and Dr. Hallie Brinkerhuff are especially appreciated. The research was financially supported by the U.S. Army Medical Research and Materiel Command, Contract No. W81XWH-09-1-0741. en_EN
dc.language Inglés es_ES
dc.publisher American Society of Mechanical Engineers (ASME) es_ES
dc.relation Zimmer in developing the technology es_ES
dc.relation U.S. Army Medical Research and Materiel Command W81XWH-09-1-0741 es_ES
dc.relation.ispartof Journal of Biomechanical Engineering es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Bone fracture fixation es_ES
dc.subject High speed es_ES
dc.subject Fixation darts es_ES
dc.subject Nails es_ES
dc.subject Screws es_ES
dc.subject Pullout strength es_ES
dc.subject Withdrawal strength es_ES
dc.subject.classification INGENIERIA DE LOS PROCESOS DE FABRICACION es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.title High speed fracture fixation: assessing resulting fixation stability and fastener withdrawal strength es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1115/1.4024641
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.description.bibliographicCitation Prygoski, MP.; Sánchez Caballero, S.; Schmid, SR.; Lozier, AJ.; Sellés Cantó, MÁ. (2013). High speed fracture fixation: assessing resulting fixation stability and fastener withdrawal strength. Journal of Biomechanical Engineering. 135(9):9100801-9100810. doi:10.1115/1.4024641 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://biomechanical.asmedigitalcollection.asme.org/article.aspx?articleid=1693314 es_ES
dc.description.upvformatpinicio 9100801 es_ES
dc.description.upvformatpfin 9100810 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 135 es_ES
dc.description.issue 9 es_ES
dc.relation.senia 251930


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