Improving Equine Intramedullary Nail Osteosynthesis via Fracture Adjacent Polymer Reinforcement

Abstract: Introduction: Osteosynthesis of the equine femur is still a challenge for veterinary medicine. Even though intramedullary fracture fixation is possible nowadays, the varying geometry of the medullary cavity along the bone axis is a critical factor. Limited contact area between implant and bone can cause insufficient primary stability. In this study, it was investigated whether the osteosynthesis stability can be improved with a form-adaptive reinforcement for the diaphyseal part of the proximal fragment. Material and Methods: Eight equine femora were fitted with intramedullary nail osteosynthesis and analyzed by 4-point bending. Virtual position planning of the ex-vivo implantation using CT-data increased comparability. For five femora the proximal fragment was reinforced with a flexible polymer mixture. Longterm stability was tested via cyclic loading. Bending stiffness and its development due to cyclic loading was evaluated before and after reinforcement procedure. Finally, load-to-failure was tested in the same setup. Results and Discussion: The application of the polymer reinforcement increased the maximum torque in the load-tofailure measurement by 26%. Bending stiffness was not affected in the measured loading range by the reinforcement. Cyclic loading increased bending stiffness for a conditioned state but showed to be reversible for the most part. Conclusion: The fracture adjacent reinforcement showed to be beneficial to the osteosynthesis stability, but further investigation is necessary for surgical application.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Improving Equine Intramedullary Nail Osteosynthesis via Fracture Adjacent Polymer Reinforcement ; volume:8 ; number:2 ; year:2022 ; pages:129-132 ; extent:4
Current directions in biomedical engineering ; 8, Heft 2 (2022), 129-132 (gesamt 4)

Urheber
Lang, Jan J.
Baylacher, Veronika
Micheler, Carina M.
Wilhelm, Nikolas J.
Hinterwimmer, Florian
Schwaiger, Benedikt
Barnewitz, Dirk
Eisenhart-Rothe, Rüdiger von
Grosse, Christian U.
Burgkart, Rainer

DOI
10.1515/cdbme-2022-1034
URN
urn:nbn:de:101:1-2022090315382736965888
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.0028, 06:29 MEZ

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