title: The role of US in the evaluation of clinically suspected ulnar collateral ligament injuries of the thumb: spectrum of findings and differential diagnosis.
abstract: Injury to the ulnar collateral ligament (UCL) complex of the thumb is a common traumatic lesion that requires prompt imaging evaluation for adequate treatment. In this article, we review the role of ultrasound in diagnosis and illustrate the spectrum of both static and dynamic findings related to the UCL injuries. We also describe a number of alternative diagnoses in the vicinity of the first metacarpophalangeal joint that may present clinically as pseudoligamentous lesions in a trauma setting.
authors.affiliation: Radimagem Diagnóstico por Imagem, Porto Alegre, Brazil carlos_arend@hotmail.com.
authors.forename: Carlos F
authors.initials: CF
authors.lastname: Arend
authors.affiliation: Radimagem Diagnóstico por Imagem, Porto Alegre, Brazil.
authors.forename: Tiago R
authors.initials: TR
authors.lastname: da Silva
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008023:Ligaments, Articular / Q000000981:diagnostic imaging* / Q000293:injuries*; D013933:Thumb / Q000000981:diagnostic imaging* / Q000293:injuries*; D014457:Ulna / Q000000981:diagnostic imaging* / Q000293:injuries*; D014463:Ultrasonography / Q000379:methods*
keywords: Sonography; Stener lesion; thumb; trauma; ulnar collateral ligament of the thumb