title: The Use of a Dynamic 4-Dimensional Computed Tomography Scan in the Diagnosis of Atraumatic Posterior Sternoclavicular Joint Instability.
abstract: Recurrent symptomatic sternoclavicular (SC) joint instability is rare and most commonly occurs following high-energy trauma or in patients with generalized ligamentous laxity. We report an unusual case of an atraumatic posterior subluxation of the SC joint, leading to a feeling of choking. The posterior subluxation, which occurred during shoulder motion and in supine body position, was demonstrated using a dynamic wide-volume 4-dimensional computed tomography scan. Based on continuing patient symptoms and imaging findings, surgical stabilization of the SC joint was undertaken.
authors.affiliation: From the *Centre for Medical Research Development, Toshiba Medical, North Ryde, New South Wales; and †Medical Imaging Department, Monash Medical Centre, Clayton; and ‡Department of Orthopaedic Surgery, The Alfred Hospital, Prahran, Victoria, Australia.
authors.forename: Jacqueline L
authors.initials: JL
authors.lastname: Hislop-Jambrich
authors.forename: John M
authors.initials: JM
authors.lastname: Troupis
authors.forename: Afshin Kamali
authors.initials: AK
authors.lastname: Moaveni
mesh_terms: D000368:Aged; D001178:Arthroplasty / Q000379:methods; D005260:Female; D056973:Four-Dimensional Computed Tomography / Q000379:methods*; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000601:surgery; D056888:Patient Positioning / Q000379:methods*; D013247:Sternoclavicular Joint / Q000000981:diagnostic imaging* / Q000293:injuries* / Q000601:surgery