title: [Reconstruction for posterior wall of external meatus and sound transmission apparatus after radical mastoidectomy].
abstract: OBJECTIVE
  To reconstruct middle ear structure for open mastoid antrum with external auditory canal after radical mastoidectomy in one-stage.
  
  
  METHODS
  71 ears of post-mastoidectomy (discharging 53 ears and dried up 18 ears) were undergone with reconstruction of middle ear. The posterior wall of external auditory canal, mastoid cavity and chain of ossicles were reconstructed with homologous costal cartilage.
  
  
  RESULTS
  69 ears of 71 cases were near normal structure followed up 6 months to 5 years after operations. The result showed hearing improvement over 15 dB were 55 ears (77.5%) and under 15 dB were 11 cases (15.5%). Five cases (7.0%) were failed.
  
  
  CONCLUSIONS
  Reconstruction of middle ear with homologous costal cartilage is a ideal surgery to reconstruct hearing structure and avoid infection of middle cavity after radical mastoidectomy.
authors.affiliation: First Affiliated Hospital, Dalian Medical University, Dalian 116011.
authors.forename: H G
authors.initials: HG
authors.lastname: Lu
authors.forename: H
authors.initials: H
authors.lastname: Gao
authors.forename: W
authors.initials: W
authors.lastname: Liu
mesh_terms: D000328:Adult; D002356:Cartilage / Q000637:transplantation; D004432:Ear, Middle / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008416:Mastoid / Q000601:surgery*; D008875:Middle Aged; D013506:Otologic Surgical Procedures / Q000379:methods*; D019651:Plastic Surgery Procedures / Q000379:methods; D012272:Ribs / Q000637:transplantation*; D014184:Transplantation, Homologous