title: Rhinostomies: an open and shut case?
abstract: OBJECTIVE
  To analyse bone fragments from rhinostomies of patients undergoing revisional dacryocystorhinostomy, looking for evidence of new bone formation.
  
  
  METHODS
  14 consecutive patients undergoing secondary lacrimal surgery were included in this study. In each case the existing rhinostomy was enlarged with bone punches, care being taken to use the punches with the jaws cutting perpendicularly to the edge of the rhinostomy, to allow accurate orientation of the specimens. The fragments were examined histologically for evidence of new bone formation.
  
  
  RESULTS
  Histological sections showed fragments of bone with variable fibrosis at the edge of the rhinostomy. There was evidence of only very little new bone formation.
  
  
  CONCLUSIONS
  This study has clearly shown that, at the edge of a rhinostomy, healing is predominantly by fibrosis and there is only very limited new bone formation.
authors.affiliation: Moorfields Eye Hospital, London EC1V 2PD.
authors.forename: C J
authors.initials: CJ
authors.lastname: McLean
authors.forename: I A
authors.initials: IA
authors.lastname: Cree
authors.forename: G E
authors.initials: GE
authors.lastname: Rose
mesh_terms: D000368:Aged; D016723:Bone Remodeling; D003608:Dacryocystorhinostomy; D005260:Female; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009295:Nasal Bone / Q000503:physiopathology*; D011446:Prospective Studies; D012086:Reoperation; D014945:Wound Healing