title: [Retrospective analysis of facial fractures related to falls in 260 Japanese patients].
abstract: OBJECTIVE
  Numerous epidemiological studies concerning fall-related injuries have been performed in the geriatric and orthopedic field to clarify the relation between the type of fall and fracture patterns. Although falls are a common cause of facial fractures, there is no study describing these relations. This study thus investigates the relationship between the type of fall and fracture pattern.
  
  
  METHODS
  We analyzed 260 patients with fall-related facial fractures treated between 1995 and 2000 at the First Department of Oral and Maxillofacial Surgery, Osaka University Dental Hospital, Japan. These patients were classified into two groups: (1) those who suffered fractures by a fall from a standing position or lower and (2) those who suffered fractures by a fall from a level higher than the standing position.
  
  
  RESULTS
  Fractures caused by falling from a standing position or lower was more common in older patients, especially in women beyond 70 years. The localization of mandibular fractures was not significantly different between the two groups. However, a high incidence of midface fractures was observed in the patients who fell from a higher position. These patients tended to suffer from central midface or dislocated fractures.
  
  
  CONCLUSIONS
  The results were consistent with recent orthopedic studies, which suggest a relation between fractures in old patients and osteoporosis. A strong force caused by falls from a high position tends to act on the high portion of the midface. Our classification based on the height of the falls was able to demonstrate clearly the relation between etiological factors and fracture patterns. Therefore, it seemed reasonable to analyze patients treated in the Department of Oral and Maxillofacial Surgery, Heidelberg University, Germany, according to the same classification in order to compare both collectives.
authors.affiliation: The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan, iida@dent.osaka-u.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Iida
authors.forename: T
authors.initials: T
authors.lastname: Reuther
authors.forename: M
authors.initials: M
authors.lastname: Kogo
authors.forename: T
authors.initials: T
authors.lastname: Matsuya
authors.forename: J
authors.initials: J
authors.lastname: Mühling
mesh_terms: D000058:Accidental Falls / Q000706:statistics & numerical data*; D000368:Aged; D003430:Cross-Sectional Studies; D005147:Facial Bones / Q000293:injuries*; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008337:Mandibular Fractures / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology*; D012189:Retrospective Studies; D012887:Skull Fractures / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology*