Biomechanical testing of three constructs for prosthetic laryngoplasty in horses demonstrates advantages of differing metallic implants in the arytenoid cartilage.

Machiel P. Ysebaert; James Weldon Johnson; Ulrika Maire; Ariane Campos Schweitzer; Anouk Verchrerin; Norm G. Ducharme; Fabrice Rossignol; Lauren K. Luedke

doi:10.1111/vsu.14328

August 10, 2025

Biomechanical testing of three constructs for prosthetic laryngoplasty in horses demonstrates advantages of differing metallic implants in the arytenoid cartilage.

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Key Points

The tie-bolt construct demonstrated significant stiffness and higher failure loads compared to the suture anchor and control constructs.
Suture anchor implants required the least force for achieving optimal abduction in equine larynges.
Testing involved cyclic loading and load-to-failure assessments on thirty equine cadaver larynges, randomized into three groups.
Results suggest the tie-bolt may enhance long-term stability in prosthetic laryngoplasty, reducing degradation risks.
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Answers are grounded in this paper and cite their sources.

Implication

Controlled study compares biomechanical stability of tie-bolt and suture anchor implants in equine larynges, indicating the tie-bolt offers superior stability.

Abstract

To compare the biomechanical stability of a novel arytenoid implant (tie-bolt, TB) with a suture anchor (SA) and standard laryngoplasty using suture alone (control) in equine larynges. Randomized ex vivo controlled experimental study. Thirty equine cadaver larynges. Larynges were randomly assigned to TB, SA, or control groups (n = 10 each). The force of abduction was measured for each construct, then constructs underwent cyclic loading (5-50 N for 3000 cycles) to assess elongation, followed by load-to-failure testing to assess ultimate load, displacement, stiffness, and mode of failure. The SA required less force to achieve 88% abduction (8.31 ± 2.46 N) than the TB (11.48 ± 3.6 N, p = .07) and controls (11.86 ± 2.99 N, p = .04). The TB had less construct elongation (2.62 ± 0.61 mm) than SA constructs (3.87 ± 1.25 mm, p = .01) and was stiffer (31.05 ± 3.38 N/mm) than both control (23.48 ± 2.06 N/mm, p < .0001) and SA constructs (18.53 ± 4.15 N/mm, p < .0001). The TB construct failed at higher ultimate load and displacement (367.25 ± 66.98 N and 19.11 ± 2.51 mm, respectively) than the control (238.14 ± 19.46 N and 14.23 ± 1.6 mm; p < .0001 for both) and SA constructs (196.55 ± 47.17 N and 16.23 ± 2.02 mm; p < .0001 and p = .01, respectively). The primary modes of failure were suture cut-through for control, implant pullout for SA, and arytenoid fracture for TB. The SA required the least force for abduction. The TB was a stiffer construct that resulted in higher failure loads. The SA may reduce construct loading during abduction. The TB offers superior mechanical stability, potentially reducing long-term degradation from cyclic loading.

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Cite This Study

Ysebaert et al. (2025) studied this question.

synapsesocial.com/papers/689e03e0d61984b91e13ce34 https://doi.org/10.1111/vsu.14328

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Biomechanical testing of three constructs for prosthetic laryngoplasty in horses demonstrates advantages of differing metallic implants in the arytenoid cartilage.

Key Points

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Implication

Abstract

Discussion

Cite This Study

Biomechanical testing of three constructs for prosthetic laryngoplasty in horses demonstrates advantages of differing metallic implants in the arytenoid cartilage.

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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