title: Mastoid obliteration with hydroxyapatite cement: the Ipswich experience.
abstract: OBJECTIVE
  This article reports the outcomes of a series of patients who underwent obliteration of the mastoid cavity using hydroxyapatite cement. A comparison is made with a group of patients who underwent similar surgery in the same period using hydroxyapatite granules.
  
  
  METHODS
  Nonrandomized observational analysis.
  
  
  METHODS
  Tertiary otology unit.
  
  
  METHODS
  All patients requiring mastoid surgery and primary obliteration or revision mastoid surgery and obliteration.
  
  
  METHODS
  Dry cavity with full epithelialization and good tolerance to swimming at 1 year postoperatively.
  
  
  RESULTS
  In four of eight patients who had obliteration using hydroxyapatite cement, there was infection of the obliteration site, requiring revision. All of the patients who had obliteration with hydroxyapatite granules had dry and well-epithelialized mastoid cavities at 1-year follow-up, with ears that tolerated swimming.
  
  
  CONCLUSIONS
  The use of hydroxyapatite cement is not recommended in mastoid obliteration surgery.
authors.affiliation: ENT Department, Ipswich Hospital NHS Trust, England.
authors.forename: S
authors.initials: S
authors.lastname: Mahendran
authors.forename: M W
authors.initials: MW
authors.lastname: Yung
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001672:Biocompatible Materials; D001843:Bone Cements / Q000009:adverse effects / Q000627:therapeutic use*; D003646:Debridement; D017886:Durapatite / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D008863:Microspheres; D008875:Middle Aged; D013524:Surgical Flaps; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D001843:Bone Cements; D017886:Durapatite