Biomechanical testing of a hybrid locking plate fixation of equine sesamoid osteotomies.
| Autor: | Almeida da Silveira E; Eduardo Almeida da Silveira, DMV, M.Sc., 3200, Rue Sicotte, Saint-Hyacinthe, Québec J2S 2M2, Canada, Phone: +1 450 773 8521, ext. 8255, Fax: +1 450 773 8521, E-mail: edu_teatino@hotmail.com., Levasseur A, Lacourt M, Elce Y, Petit Y |
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| Jazyk: | angličtina |
| Zdroj: | Veterinary and comparative orthopaedics and traumatology : V.C.O.T [Vet Comp Orthop Traumatol] 2014; Vol. 27 (2), pp. 107-12. Date of Electronic Publication: 2014 Jan 20. |
| DOI: | 10.3415/VCOT-13-06-0084 |
| Abstrakt: | Objective: To compare the biomechanical properties of a hybrid locking compression plate (LCP) construct with the compression screw technique as a treatment for transverse mid-body proximal sesamoid bone fractures. Methods: Ten paired forelimbs from abattoir horses were used. The medial proximal sesamoid bone of each limb was osteotomized transversely and randomly assigned, to either repair with a two-hole 3.5 mm LCP or a 4.5 mm cortical screw placed in lag fashion. Each limb was tested biomechanically by axial loading in single cycle until failure. The point of failure was evaluated from the load-displacement curves. Then a gross evaluation and radiographs were performed to identify the mode of failure. Results: The loads to failure of limbs repaired with the hybrid LCP construct (4968 N ± 2167) and the limbs repaired with the screw technique (3009 N ± 1091) were significantly different (p <0.01). The most common mode of failure was through a comminuted fracture of the apical fragment of the proximal sesamoid bone. Clinical Significance: The LCP technique has potential to achieve a better fracture stability and healing when applied to mid-body fractures of the proximal sesamoid bone. Further testing, particularly fatigue resistance is required to corroborate its potential as a treatment option for mid-body fractures of the proximal sesamoid bone. |
| Databáze: | MEDLINE |
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