title: Sonographic diagnosis of distal biceps tendon rupture: a prospective study of 25 cases.
abstract: OBJECTIVE
  To describe the sonographic findings of distal biceps tendon ruptures and to assess the accuracy of the technique.
  
  
  METHODS
  Twenty-five patients with clinically indicated distal biceps tendon ruptures were prospectively studied by sonography. Five patients also underwent magnetic resonance imaging. Surgical confirmation was obtained in 14 patients.
  
  
  RESULTS
  Seventeen complete tendon ruptures and 3 partial tears were correctly shown by sonography; 1 complete rupture was incorrectly shown as a partial tear by sonography. Sonographic features of complete rupture were absence of tendon in the expected location, fluid collection in a typical tendon gap, and a mass in the antecubital fossa. Sonographic features of incomplete rupture were intratendinous hypoechogenicity and tendon thinning. Peritendinous fluid was found in complete and incomplete ruptures.
  
  
  CONCLUSIONS
  In distal biceps tendon ruptures, sonography is a cost-effective method that can confirm the clinical indications with good accuracy and can show tendon lesions when the clinical indications are low.
authors.affiliation: Institute of Radiology, Università Cattolica del Sacro Cuore, Rome, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Belli
authors.forename: M
authors.initials: M
authors.lastname: Costantini
authors.forename: P
authors.initials: P
authors.lastname: Mirk
authors.forename: A
authors.initials: A
authors.lastname: Leone
authors.forename: G
authors.initials: G
authors.lastname: Pastore
authors.forename: P
authors.initials: P
authors.lastname: Marano
mesh_terms: D000328:Adult; D001132:Arm; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015203:Reproducibility of Results; D012421:Rupture; D013708:Tendon Injuries / Q000000981:diagnostic imaging*; D014463:Ultrasonography