ArticleOrthopaedic journal of sports medicine2021
The Role of the Acromioclavicular Ligament in Acromioclavicular Joint Stability: A Cadaveric Biomechanical Study.
Article in Orthopaedic journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 24 citations in OpenAlex.
- The 50 Most Cited Original Studies on Acromioclavicular Joint Reconstruction: A Bibliometric and Study-Quality Analysis.Orthopaedic journal of sports medicine · 2026Review
- Magnetic Resonance Imaging-Based Evaluation of Healing Status and Injury Sites of the Acromioclavicular Ligament Complex and Their Association with Reduction Loss after Hook Plate Fixation.Clinics in orthopedic surgery · 2025Article
- Effect of deltoid-trapezius overlap repair on acromioclavicular joint stability: a biomechanical study using fresh-frozen cadavers.BMC musculoskeletal disorders · 2025Article
- Article
- Clinical and Radiological Assessment of Modified Weaver-Dunn Technology, Arthroscopic Single Tunnel Technique and Arthroscopic Coracoid Sling Technique Three Different Surgical Techniques in the Treatment of Acute Rockwood III-V Acromioclavicular Dislocations.Journal of multidisciplinary healthcare · 2025Article
- Acromioclavicular joint biomechanics: a systematic review.JSES reviews, reports, and techniques · 2024Review
- Current Concepts in Management of Acromioclavicular Joint Injury.Journal of clinical medicine · 2024Review
- Arthroscopic-Assisted Coracoclavicular Stabilization With Anchorless Transosseous Double-Row Acromioclavicular Ligament Complex Repair: The Acute Acromioclavicular Joint Dislocation.Arthroscopy techniques · 2022Article
- Acromioclavicular joint instability on cross-body adduction view: the biomechanical effect of acromioclavicular and coracoclavicular ligaments sectioning.BMC musculoskeletal disorders · 2022Article
- Anteroinferior bundle of the acromioclavicular ligament plays a substantial role in the joint function during shoulder elevation and horizontal adduction: a finite element model.Journal of orthopaedic surgery and research · 2022Article
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAcromioclavicular (AC) joint dislocation is evaluated using the radiologically based Rockwood classification. The relationship between ligamentous injury and radiological assessment is still controversial. PURPOSE/HYPOTHESIS: To investigate how the AC ligament and trapezoid ligament biomechanically contribute to the stability of the AC joint using cadaveric specimens. The hypothesis was that isolated sectioning of the AC ligament would result in increased instability in the superior direction and that displacement >50% of the AC joint would occur. STUDY
designControlled laboratory study.
methodsSix shoulders from 6 fresh-frozen cadavers were used in this study. Both the scapula and sternum were solidly fixed on a customized wooden jig with an external fixator. We simulated distal clavicular dislocation with sequential sectioning of the AC and coracoclavicular (CC) ligaments. Sectioning stages were defined as follows: stage 0, the AC ligament, CC ligament, and AC joint capsule were left intact; stage 1, the anteroinferior bundle of the AC ligament, joint capsule, and disk were sectioned; stage 2, the superoposterior bundle of the AC ligament was sectioned; and stage 3, the trapezoid ligament was sectioned. The distal clavicle was loaded with 70 N in the superior and posterior directions, and the magnitudes of displacement were measured.
resultsThe amounts of superior displacement averaged 3.7 mm (stage 0), 3.8 mm (stage 1), 8.3 mm (stage 2), and 9.5 mm (stage 3). Superior displacement >50% of the AC joint was observed in stage 2 (4/6; 67%) and stage 3 (6/6; 100%). The magnitudes of posterior displacement were 3.7 mm (stage 0), 3.7 mm (stage 1), 5.6 mm (stage 2), and 9.8 mm (stage 3). Posterior displacement >50% of the AC joint was observed in stage 3 (1/6; 17%).
conclusionWe found that the AC ligaments contribute significantly to AC joint stability, and superior displacement >50% of the AC joint can occur with AC ligament tears alone. CLINICAL RELEVANCE: The AC ligament plays an important role not only in horizontal stability but also in vertical stability of the AC joint.
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