title: Sonography compared with radiography in revealing acute rib fracture.
abstract: OBJECTIVE
  This study was undertaken to compare the sensitivities of sonography and radiography for revealing acute rib fracture.
  
  
  METHODS
  Chest radiography and rib sonography were performed on 50 patients with suspected rib fractures. Sonography was performed with a 9- or 12-MHz linear transducer. Fractures were identified by a disruption of the anterior margin of the rib, costochondral junction, or costal cartilage. The incidence, location, and degree of displacement of fractures revealed by radiography and sonography were compared. Sonography was performed again after 3 weeks in 37 subjects.
  
  
  RESULTS
  At presentation, radiographs revealed eight rib fractures in six (12%) of 50 patients and sonography revealed 83 rib fractures in 39 (78%) of 50 patients. Seventy-four (89%) of the 83 sonographically detected fractures were located in the rib, four (5%) were located at the costochondral junction, and five (6%) in the costal cartilage. Repeated sonography after 3 weeks showed evidence of healing in all reexamined fractures. Combining sonography at presentation and after 3 weeks, 88% of subjects had sustained a fracture.
  
  
  CONCLUSIONS
  Sonography reveals more fractures than does radiography and will reveal fractures in most patients presenting with suspected rib fracture. Further scientific studies are needed to clarify the appropriate role for sonography in rib fracture detection.
authors.affiliation: Department of Diagnostic Radiology and Organ Imaging, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT.
authors.forename: J F
authors.initials: JF
authors.lastname: Griffith
authors.forename: T H
authors.initials: TH
authors.lastname: Rainer
authors.forename: A S
authors.initials: AS
authors.lastname: Ching
authors.forename: K L
authors.initials: KL
authors.lastname: Law
authors.forename: R A
authors.initials: RA
authors.lastname: Cocks
authors.forename: C
authors.initials: C
authors.lastname: Metreweli
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012253:Rib Fractures / Q000000981:diagnostic imaging*; D012272:Ribs / Q000000981:diagnostic imaging; D012680:Sensitivity and Specificity; D014463:Ultrasonography