title: Is a subset of wrist ganglia the sequela of internal derangements of the wrist joint? MR imaging findings.
abstract: OBJECTIVE
  To determine if there is an association between wrist ganglia and internal derangements of the wrist joint by reviewing magnetic resonance (MR) images.
  
  
  METHODS
  Two observers retrospectively reviewed MR images of the wrist obtained in 625 patients at 1.5 T for the presence of ganglia and associated triangular fibrocartilage complex, scapholunate ligamentous, or lunotriquetral ligamentous tears that were within 3 mm of the ganglion. When available, surgery and/or pathology records were reviewed.
  
  
  RESULTS
  There were 122 ganglia and 37 internal derangements. Of the 22 ulnar-sided ganglia, 10 (45%) demonstrated associated triangular fibrocartilage complex tears. Of the 97 radial-sided ganglia, 27 (28%) demonstrated ligamentous tears related to the site of the ganglion. The radial-sided tears involved the radial aspect of the triangular fibrocartilage complex in 12 ganglia; the scapholunate ligament, in isolation, in eight ganglia; and both the triangular fibrocartilage complex and the scapholunate ligament in six ganglia. Only one of the ganglia demonstrated an associated lunotriquetral ligamentous tear. Surgical findings confirmed the ligamentous tears in 25 patients.
  
  
  CONCLUSIONS
  Wrist ganglia are associated, not infrequently, with internal derangements of the wrist.
authors.affiliation: Department of Diagnostic Radiology, Faculty of Medicine, Alexandria University, Egypt.
authors.forename: K I
authors.initials: KI
authors.lastname: el-Noueam
authors.forename: M E
authors.initials: ME
authors.lastname: Schweitzer
authors.forename: R
authors.initials: R
authors.lastname: Blasbalg
authors.forename: A A
authors.initials: AA
authors.lastname: Farahat
authors.forename: R W
authors.initials: RW
authors.lastname: Culp
authors.forename: L A
authors.initials: LA
authors.lastname: Osterman
authors.forename: A
authors.initials: A
authors.lastname: Malik
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D012189:Retrospective Studies; D013581:Synovial Cyst / Q000209:etiology* / Q000473:pathology; D014953:Wrist / Q000473:pathology*; D014954:Wrist Injuries / Q000150:complications* / Q000175:diagnosis; D014955:Wrist Joint / Q000473:pathology*