title: Elimination of temporal bone cerebrospinal fluid otorrhea using hydroxyapatite cement.
abstract: OBJECTIVE
  This report introduces a new method to control cerebrospinal fluid (CSF) otorrhea using hydroxyapatite cement (HAC) via a transmastoid approach. This technique eliminates the need for a transmastoid or middle cranial fossa approach with soft tissue repair and prolonged hospitalization caused by lumbar drainage.
  
  
  METHODS
  Retrospective review.
  
  
  METHODS
  Thirteen cases of transmastoid repairs of CSF otorrhea using HAC from August 1996 to February 1999 were reviewed.
  
  
  RESULTS
  The CSF leak was controlled in every patient using HAC through a transmastoid approach. The reconstruction involved eight tegmen defects, three posterior fossa dural plate defects, and two congenital inner ear fistula secondary to Mondini malformation. Postoperative wound infection in one patient was the only complication that occurred. The average hospital stay was 48 hours. Follow-up ranged from 12 to 44 months with no recurrence of CSF otorrhea.
  
  
  CONCLUSIONS
  The successful use of HAC to control CSF otorrhea through a transmastoid approach reduces patient morbidity by obviating the need for middle cranial fossa approaches, donor soft tissue sites, and spinal drainage.
authors.affiliation: Section of Otolaryngology, Yale University, New Haven, Connecticut 06520-8041, USA.
authors.forename: J F
authors.initials: JF
authors.lastname: Kveton
authors.forename: R
authors.initials: R
authors.lastname: Goravalingappa
mesh_terms: D000328:Adult; D000368:Aged; D001843:Bone Cements; D002558:Cerebrospinal Fluid Otorrhea / Q000209:etiology / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D005500:Follow-Up Studies; D006801:Humans; D006882:Hydroxyapatites / Q000627:therapeutic use*; D008416:Mastoid; D008875:Middle Aged; D011183:Postoperative Complications; D012189:Retrospective Studies; D013701:Temporal Bone / Q000002:abnormalities / Q000293:injuries; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements; D006882:Hydroxyapatites