000162587 001__ 162587
000162587 005__ 20251017144621.0
000162587 0247_ $$2doi$$a10.1016/j.ejrad.2025.112398
000162587 0248_ $$2sideral$$a145106
000162587 037__ $$aART-2025-145106
000162587 041__ $$aeng
000162587 100__ $$aMargüenda-Fernández, Víctor
000162587 245__ $$aThe central dorsal component of the dorsoradial ligament of the trapeziometacarpal joint: Cadaveric and sonographic validation
000162587 260__ $$c2025
000162587 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162587 5203_ $$aPurpose
Osteoarthritis of the trapeziometacarpal joint is very common, especially in females, and is closely associated with ligamentous laxity and joint subluxation. The dorsoradialis ligament (DRL) remains largely unexplored in ultrasound studies despite its clinical relevance. This study aimed to identify the central fascicle of the DRL anatomically and ultrasonographically and to establish a standardized ultrasound examination protocol.
Methods
This observational cross-sectional validation study was conducted in two phases. First, anatomical dissections were performed on five cadaveric specimens to define anatomical landmarks and guide the development of an ultrasound protocol. In the second phase, bilateral ultrasound examinations were performed on the thumbs of 26 healthy participants (n = 52) to assess ligament morphology and establish normative measurements.
Results
The DRL was successfully identified in all cases, and ultrasound imaging allowed for the reproducible visualization of its central fascicle. The mean joint distance was 0.36 ± 0.13 cm, and the mean ligament area was 0.20 ± 0.08 cm2. Significant differences were observed between the sexes, with males having statistically higher distances (p < 0.05) than females from the tubercle of the trapezium to the skin and from the tubercle of the trapezium to the upper edge of the first metacarpal. However, no significant correlations were found with age, and no significant asymmetries were found between both sides.
Conclusion
The DRL can be reliably assessed by ultrasound and provides clinically relevant parameters to assess ligament morphology. The standardized protocol developed provides a valuable tool for detecting ligamentous insufficiency and capsuloligamentous changes. These findings contribute to understanding the anatomy and function of the DRL and provide a basis for future research into its role in joint stability and osteoarthritic progression.
000162587 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000162587 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000162587 700__ $$aValera-Garrido, Fermín
000162587 700__ $$aValderrama-Canales, Francisco J.
000162587 700__ $$aMinaya-Muñoz, Francisco
000162587 700__ $$0(orcid)0000-0002-9201-0120$$aHerrero, Pablo$$uUniversidad de Zaragoza
000162587 700__ $$0(orcid)0000-0002-6506-6081$$aLapuente-Hernández, Diego$$uUniversidad de Zaragoza
000162587 7102_ $$11006$$2413$$aUniversidad de Zaragoza$$bDpto. Fisiatría y Enfermería$$cÁrea Fisioterapia
000162587 773__ $$g(2025), 112398$$pEur. j. radiol.$$tEuropean Journal of Radiology$$x0720-048X
000162587 8564_ $$s231430$$uhttps://zaguan.unizar.es/record/162587/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-08-29
000162587 8564_ $$s2584753$$uhttps://zaguan.unizar.es/record/162587/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2026-08-29
000162587 909CO $$ooai:zaguan.unizar.es:162587$$particulos$$pdriver
000162587 951__ $$a2025-10-17-14:21:53
000162587 980__ $$aARTICLE