Biomechanical analysis of a magnesium plantar plate prototype system for the first tarsometatarsal joint fusion: a cadaveric study.

Autor: Zhou P; Experimental Orthopaedics and Trauma Surgery, Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Ribeiro M; Experimental Orthopaedics and Trauma Surgery, Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Greven J; Experimental Orthopaedics and Trauma Surgery, Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Praster M; Experimental Orthopaedics and Trauma Surgery, Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Seitz JM; Medical Magnesium GmbH, Philipsstraße 8, 52068, Aachen, Germany., Habicht S; Medical Magnesium GmbH, Philipsstraße 8, 52068, Aachen, Germany., Hildebrand F; Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Balmayor ER; Experimental Orthopaedics and Trauma Surgery, Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany., Lichte P; Department of Orthopaedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074, Aachen, Germany. plichte@ukaachen.de.
Jazyk: angličtina
Zdroj: Journal of orthopaedic surgery and research [J Orthop Surg Res] 2024 Nov 28; Vol. 19 (1), pp. 802. Date of Electronic Publication: 2024 Nov 28.
DOI: 10.1186/s13018-024-05208-7
Abstrakt: Background: Titanium plantar plates have proven successful in the fixation of the first tarsometatarsal arthrodesis (TMT). However, a second surgery is typically needed for implant removal, and potential adverse effects, carried by the conventional implantations, are not uncommon. The purpose of this study was to determine whether a novel magnesium-based plantar plate system provides similar fusion stability to a titanium-based plantar plate system under various loading conditions.
Methods: Six matched-pair human cadaveric specimens underwent TMT fusions using either a magnesium plantar plate system prototype or a titanium plantar plate system. Specimens were cyclically loaded with a force ranging from 5 N to 50 N for 5,000 cycles, and displacement was recorded. Axial stiffness (N/mm) was calculated from load-displacement curves. Each specimen was loaded to failure at a rate of 5 mm/min, and the ultimate load was recorded.
Results: No significant difference was found in the vertical displacement between Ti group and Mg group after 100 cycles (2.4 ± 1.0 mm vs. 1.3 ± 1.4 mm, p = 0.196), 500 cycles (3.3 ± 1.3 mm vs. 1.7 ± 1.7 mm, p = 0.142), 1,000 cycles (3.7 ± 1.5 mm vs. 1.9 ± 1.9 mm, p = 0.128), 2,500 cycles (4.2 ± 1.7 mm vs. 2.3 ± 2.2 mm, p = 0.172) and 5,000 cycles (4.5 ± 1.8 mm vs. 2.3 ± 3.3 mm, p = 0.125), Additionally, no significant differences were observed in initial stiffness (53.1 ± 19.2 N/mm vs. 82.2 ± 53.9 N/mm, p = 0.257), final stiffness (90.6 ± 48.9 N/mm vs. 120.0 ± 48.3 N/mm, p = 0.319), or maximum load-to-failure (259.8 ± 98.2 N vs. 323.9 ± 134.9 N, p = 0.369).
Conclusions: Based on the performed biomechanical testing, the magnesium plantar plate system provides mechanical stability equivalent to the titanium plantar plate system in fixation for the first TMT joint fusion.
Competing Interests: Declarations. Ethics approval and consent to participate: This research was reviewed and approved by the Institutional Review Board at University Hospital RWTH Aachen (EK 048 − 21). Consent for publication: Not applicable. Competing interests: Jan-Marten Seitz and Simon Habicht are paid employees from Medical Magnesium GmbH. The other authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
(© 2024. The Author(s).)
Databáze: MEDLINE
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