title: [Non-infectious unilateral wing lameness of pigeons, so called "Schieffliegersyndrom". First clinical and pathological results].
abstract: OBJECTIVE
  After medium- and long-distance flights and following the first training units of the year, a unilateral injuring of the shoulder joint is observed in racing pigeons. The objective of the study was to discuss the pathogenesis and aetiology of the damage.
  
  
  METHODS
  In 35 pigeons suffering from unilateral wing lameness, the affected shoulder joints were examined microbiologically and histopathologically. Additionally, both shoulder joints of 12 affected pigeons were examined pathologically and histopathologically.
  
  
  RESULTS
  Joint capsule, articular cartilage, tendons and bone structures displayed pathological changes.
  
  
  CONCLUSIONS
  The non-infectious unilateral wing lameness of pigeons appears to be a stress-induced mechanical damage of the shoulder joint. The different structures of the joint are over-extended by the physical/mechanical influences during longer flights.
authors.affiliation: Dr. Andreas Kirchhoff, Praxis für Veterinärpathologie, Zweckeler Straße 83, 45896 Gelsenkirchen, E-Mail: a.kirchhoff@vet-patho-kirchhoff.de.
authors.forename: A
authors.initials: A
authors.lastname: Kirchhoff
authors.forename: M
authors.initials: M
authors.lastname: Neumann-Aukthun
authors.forename: L
authors.initials: L
authors.lastname: Kamphausen
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000175:diagnosis* / Q000473:pathology; D010856:Columbidae / Q000502:physiology*; D007794:Lameness, Animal / Q000175:diagnosis* / Q000473:pathology; D012782:Shoulder / Q000503:physiopathology; D000070599:Shoulder Injuries; D014921:Wings, Animal / Q000293:injuries* / Q000503:physiopathology*
keywords: Ligamentum acrocoracohumerale; Processus acrocoracoideus; Wing lameness; hereditary disease; mechanical stress; pigeons; shoulder joint