Annular Ligament Instability in Lateral Elbow Pathology : Objective Confirmation Through a Cadaveric Study
Berlanga de Mingo, Daniel (Hospital Asepeyo Sant Cugat del Vallès)
Paz Ramírez, Guillem (Hospital de Mataró. Consorci Sanitari del Maresme)
Moreno Garcia, Arnau (Hospital Universitari de Girona Doctor Josep Trueta)
Tibau Alberdi, Maria (Hospital de Mataró. Consorci Sanitari del Maresme)
Noriego Muñoz, Diana (Hospital Universitari de Girona Doctor Josep Trueta)
Pérez Abad, Miguel (Hospital Universitari de Girona Doctor Josep Trueta)
Rossettini, Giacomo (Universitat Europea de Madrid)
Villafañe, Jorge Hugo (Universitat Europea de Madrid)
Abellán Miralles, César (Hospital Asepeyo Sant Cugat del Vallès)
Valle Jou, Montserrat del (Fundació Hospital de l'Esperit Sant)
Ferreres Claramunt, Àngel (Institut Kaplan)
Rodríguez Baeza, Alfonso (Universitat Autònoma de Barcelona. Departament de Ciències Morfològiques)

Data:	2025
Descripció:	11
Resum:	Background: The annular ligament is a key secondary stabilizer of the elbow, but its biomechanical behavior during forearm rotation has not been objectively quantified. This study aimed to assess interindividual variability in annular ligament tension, validate prior arthroscopic observations, and explore associations with chondral lesions in the lateral elbow compartment. Methods: In this cross-sectional anatomical study, 25 cadaveric upper limbs were analyzed following standardized dissection, preserving ligamentous and muscular integrity. Ligament displacement was measured using a custom mechanical apparatus and high-precision digital micrometer in neutral, 60° pronation, and 60° supination positions under axial tractions of 1, 2, and 3 kg. Ulnar length and presence of chondral lesions were also recorded. Results: Maximal ligament displacement occurred in supination in 80% of specimens (mean: 1. 23 mm at 3 kg; range: 0. 30-2. 87 mm), indicating considerable interindividual variation. Significant displacement differences were observed between all forearm positions across load levels (p < 0. 001). Chondral lesions were identified in three specimens with marked ligament laxity and reduced radial head coverage. Conclusions: This study provides the first objective evidence of annular ligament tension variability during forearm rotation. Ligament laxity may contribute to lateral elbow instability and cartilage degeneration, supporting the ligament's role as a secondary stabilizer.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Anular ligament ; Elbow instability ; Cadaveric study
Publicat a:	Muscles, Vol. 4, Num. 3 (September 2025) , art. 39, ISSN 2813-0413

DOI: 10.3390/muscles4030039
PMID: 40981064

11 p, 3.4 MB

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