ArticleJournal of experimental orthopaedics2025
Distribution analysis of structural properties of native porcine humerus-rotator cuff-scapular complex using universal testing machine.
Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Characterizing Material Properties of Rotator Cuff Tendons Relevant in Reverse Total Shoulder Arthroplasty Using Video-Based Strain Measures.The Iowa orthopaedic journal · 2026Article
- Distribution analysis of structural properties of native porcine humerus-rotator cuff-scapular complex using universal testing machine.Journal of experimental orthopaedics · 2025Article
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Authors and funding
3 authors.
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Abstract
Purpose: This study aimed to evaluate the effectiveness of an original mechanical testing setup including the humerus, myotendinous junction and scapula designed to assess the structural properties of rotator cuff attachments in large animals and determine optimal conditions. Methods: Eight domestic pigs (age, 4-6 months; weight, 30-52 kg) without genetic modifications were euthanized under intubated general anaesthesia control. The scapula-supraspinatus tendon complex with the humerus was excised as a single unit. A device was developed on a universal testing machine to pull in the direction of the tendon's path. After preconditioning at 5 N for 30 s, the composite was stretched to failure at 50 mm/min, and the failure mode was observed. The normality of each structural property was evaluated using the Shapiro-Wilk test. Student's Results: Nine shoulders (56%) ruptured at the humeral attachment; in the remaining seven, the tendon was pulled out from the scapula, leading to rupture. The maximum load and elongation at failure showed normality, whereas the yield load and linear stiffness did not show normality. The mean (standard deviation) maximum load and elongation at failure were 346.4 (99.2) N and 43.1 (12.2) mm, respectively. The median (first and third quartiles) yield load and linear stiffness were 81.2 (63.0, 121.6) N and 15.8 (14.8, 17.5) N/mm, respectively. Conclusion: This mechanical testing system is useful for evaluating the structural properties of porcine rotator cuff attachments and should be additionally evaluated by cyclic testing. Level of Evidence: Level IV.
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