ArticleFrontiers in bioengineering and biotechnology2026
Biomechanical evaluation and finite element analysis of coracoclavicular ligament reconstruction using a modified double-pulley technique.
Article in Frontiers in bioengineering and biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Conventional point-to-point (PTP) suture-anchor fixation for coracoclavicular ligament reconstruction may lead to uneven load sharing and stress concentration. This study evaluated the biomechanical performance of a modified double-pulley (DP) technique and compared it with the conventional PTP method using synthetic bone testing and finite element analysis. Methods: Ten clavicle-coracoid polyurethane model pairs were randomly assigned to the modified DP group or PTP group, with five pairs in each group. All constructs underwent cyclic loading followed by load-to-failure testing. Initial displacement, final displacement, displacement change, ultimate failure load, and failure mode were recorded. Finite element models were also established to compare stress distribution and distal clavicle displacement between the two configurations under identical boundary and loading conditions. Results: The modified DP group showed significantly lower initial displacement, final displacement, and displacement change than the PTP group during cyclic loading. The ultimate failure load was significantly higher in the modified DP group than in the PTP group (367.07 ± 17.24 N vs. 285.70 ± 38.48 Conclusion: The modified DP technique provided greater initial fixation strength and lower cyclic displacement than the conventional PTP method under the present synthetic-model testing conditions. The finite element findings provided exploratory, model-dependent mechanistic support for the observed biomechanical differences.
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