Evaluating proximal ulnar morphology in relation to the humeral flexion-extension axis
© 2024 The Authors.
| Veröffentlicht in: | JSES international. - 2020. - 9(2025), 2 vom: 01. März, Seite 574-579 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | JSES international |
| Schlagworte: | Journal Article Cartesian coordinate system Elbow biomechanics Elbow flexion–extension axis Proximal ulnar anatomy Total elbow arthroplasty Ulnar implant positioning |
| Zusammenfassung: | © 2024 The Authors. Background: The study aimed to evaluate the 3D relationship between the plane of the posterior surface of the olecranon, a newly defined plane through the ridge of the greater sigmoid notch (GSN), and the ulno-humeral flexion-extension axis (FE axis), respectively Methods: Twenty-four healthy left elbows were computed tomography scanned and 3D-segmented. First, a Cartesian ulnar coordinate system (UCS) was determined. Next, several anatomical landmarks were identified. The UCS and landmarks were assessed for repeatability and reproducibility. The orientation of the posterior surface and the plane through the GSN was evaluated relative to the anatomical FE axis Results: Both the UCS and the landmarks were considered repeatable and reproducible. In the axial plane, the mean angle between the posterior surface and the FE axis was 3° (standard deviation: ±5°, 95% confidence interval [CI]: [-6°; 12°]) external rotation. The mean axial angle between the GSN and the FE axis was 88° (standard deviation: ±3°, 95% CI: [83°; 94°]) external rotation Conclusion: This study concludes that the angulation between the posterior plane surface and the FE axis is highly variable (95% CI range: 18°). The plane through the ridge of the GSN of a healthy proximal ulna could provide a more reliable anatomical landmark to estimate the position of the elbow FE axis compared to the posterior surface (95% CI range: 11°) |
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| Beschreibung: | Date Revised 05.04.2025 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
| ISSN: | 2666-6383 |
| DOI: | 10.1016/j.jseint.2024.10.016 |