In Vitro Mechanical Evaluation of a Novel Pin-Sleeve System for External Fixation of Distal Limb Fractures in Horses: A Proof of Concept Study
2010; Wiley; Volume: 39; Issue: 5 Linguagem: Inglês
10.1111/j.1532-950x.2010.00707.x
ISSN1532-950X
AutoresStefano Brianza, Vittoria Brighenti, Ludovic Bouré, Victor Sprenger, Simon G. Pearce, Karsten Schwieger,
Tópico(s)Veterinary Equine Medical Research
ResumoVeterinary SurgeryVolume 39, Issue 5 p. 601-608 In Vitro Mechanical Evaluation of a Novel Pin–Sleeve System for External Fixation of Distal Limb Fractures in Horses: A Proof of Concept Study Stefano Brianza DVM, PhD, Eng, Stefano Brianza DVM, PhD, Eng AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorVittoria Brighenti Eng, Vittoria Brighenti Eng AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorLudovic Boure DVM, MSc, DES, Diplomate ACVS & ECVS, Ludovic Boure DVM, MSc, DES, Diplomate ACVS & ECVS AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorVictor Sprenger Eng, PhD, Victor Sprenger Eng, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorSimon Pearce BVSc, PhD, Simon Pearce BVSc, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorKarsten Schwieger Eng, PhD, Karsten Schwieger Eng, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this author Stefano Brianza DVM, PhD, Eng, Stefano Brianza DVM, PhD, Eng AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorVittoria Brighenti Eng, Vittoria Brighenti Eng AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorLudovic Boure DVM, MSc, DES, Diplomate ACVS & ECVS, Ludovic Boure DVM, MSc, DES, Diplomate ACVS & ECVS AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorVictor Sprenger Eng, PhD, Victor Sprenger Eng, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorSimon Pearce BVSc, PhD, Simon Pearce BVSc, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this authorKarsten Schwieger Eng, PhD, Karsten Schwieger Eng, PhD AO Research Institute, Davos Platz, SwitzerlandSearch for more papers by this author First published: 06 July 2010 https://doi.org/10.1111/j.1532-950X.2010.00707.xCitations: 10 Corresponding AuthorStefano Brianza, DVM, PhD, Eng, AO Research Institute, Clavadelerstrasse 8, 7270 Davos Platz, SwitzerlandE-mail: [email protected] Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Objective: To evaluate the efficacy of a novel pin–sleeve cast (PSC) system for external fixation of distal limb fractures in horses and to compare it with the transfixation pin cast (TPC) system. Study Design: Experimental. Sample Population: One bone substitute each was used for the TPC and PSC systems. The PSC was tested in 4 configurations characterized by different pin preloads. Methods: Specimens were loaded in axial compression in the elastic range. Variables compared statistically were: bone substitute axial displacement and axial strain measured above implants with strain gauges. Pin preload was correlated with the variables investigated. Load to failure and a fatigue tests supplemented the investigation. Results: The PSC configuration with the highest pin preload showed a significantly lower axial displacement compared with the TPC. No significant differences were observed between all other PSC configurations and the TPC. All PSC systems had a significant decrease in recorded strain compared with the TPC system. Pin axial preload inversely correlated with axial displacement but had no effect on axial strain. In the failure test, the PSC encountered plastic deformation earlier than the TPC. In the fatigue test, the PSC ran >200,000 cycles. Conclusions: Preliminary in vitro tests showed that the PSC system significantly reduced peri-implant strain while concurrently having comparable axial displacement to the TPC system. Clinical Relevance: The PSC system has the potential to reduce the risk of pin loosening in horses. REFERENCES 1 Lescun TB, McClure SR, Ward MP, et al: Evaluation of transfixation casting for treatment of third metacarpal, third metatarsal, and phalangeal fractures in horses: 37 cases (1994–2004). 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