title: [Aneurysmal diaphyseal bone cyst. Etio-pathogenic hypothesis and review of the literature. A case report].
abstract: OBJECTIVE
  Diaphyseal aneurysmal bone cyst is very rare. We report a case in a 20-year-old female.
  
  
  METHODS
  The clinical signs developed rapidly, within one month. The lesion was first curetted and grafted with cortico-cancellous bone. Recurrence was observed 6 months later. Complete excision and reconstruction with a free fibular vascularized grafted enabled healing.
  
  
  CONCLUSIONS
  The pathogenesis of aneurysmal bone cysts is debated. We hypothesize that it is due to the opposed direction of periosteal and medullary blood circulation. This could explain the relative rarity of diaphyseal localizations compared with metaphyseal localizations.
authors.affiliation: Service d'Orthopédie-Traumatologie (Aile IV), CHU Ibn Rochd, Casablanca, Maroc.
authors.forename: B
authors.initials: B
authors.lastname: Essadki
authors.forename: M
authors.initials: M
authors.lastname: Dkhissi
authors.forename: M
authors.initials: M
authors.lastname: Moujtahid
authors.forename: B
authors.initials: B
authors.lastname: Zryouil
mesh_terms: D000328:Adult; D017824:Bone Cysts, Aneurysmal / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000601:surgery; D003475:Curettage; D005260:Female; D005360:Fibula / Q000637:transplantation; D006801:Humans; D006811:Humerus / Q000098:blood supply; D011859:Radiography; D012008:Recurrence
vernacular_title: Le kyste osseux anévrysmal diaphysaire. Hypothèse étiopathogénique et revue de la littérature. A propos d'un cas.