title: Mastoid cortex plasty using bone pate.
abstract: OBJECTIVE
  To describe the surgical technique of mastoid cortex plasty using bone pate and its clinical significance.
  
  
  METHODS
  Retrospective.
  
  
  METHODS
  Tertiary medical center.
  
  
  METHODS
  Bone pate collected while drilling the mastoid cortex was mixed with fibrin glue to make a pate plate. The mastoid cortex defect was closed with a pate plate cut to the desired shape and size.
  
  
  METHODS
  Mastoid cortex plasty was included in the first-stage operation in 49 patients who underwent staged tympanoplasty. The second-stage operation was an inspection to see whether the mastoid cortex was reconstructed and the ingrowth of fibrous soft tissue was prevented.
  
  
  RESULTS
  In 35 patients, the mastoid cortex was reconstructed completely, and soft tissue ingrowth into the mastoid cavity was blocked completely. In the remaining 14 patients, a defect of varying size occurred at the site of drainage-tube insertion. This defect was small enough to prevent soft tissue ingrowth into the mastoid cavity.
  
  
  CONCLUSIONS
  Mastoid cortex plasty is a simple and rapid procedure for preventing postoperative deformity of the mastoid process and is valuable for restoring mastoid cavity function.
authors.affiliation: Department of Otolaryngology, Takanoko Hospital, 525-1 Takanoko-cho, Matsuyama 790-0925, Japan. yamagiha@m.ehime-u.ac.jp
authors.forename: Naoaki
authors.initials: N
authors.lastname: Yanagihara
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Hinohira
authors.forename: Hidemitu
authors.initials: H
authors.lastname: Sato
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001860:Bone Plates; D002648:Child; D002675:Child, Preschool; D004322:Drainage / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies