title: Acoustic effects of the reconstructed lateral epitympanic wall in a temporal bone and clinical study.
abstract: Acoustic evaluation of reconstruction of the lateral epitympanic wall with bone or cartilage in a temporal bone study, and evaluation of audiometric data of patients who underwent cholesteatoma surgery with reconstruction of the lateral epitympanic wall with horseshoe-shaped cartilage.
  
  
  
  Temporal bone study and retrospective chart review.
  
  
  
  Preparation of temporal bones included reconstruction of the epitympanic wall with fixated and loose cartilage and bone. The volume velocities of the stapes footplate were measured from the inner-ear side of the footplate by laser scanning doppler vibrometry following sound stimulation in the outer ear canal. Additionally, the audiometric data of 13 consecutive patients who underwent epitympanic cholesteatoma surgery, with an intact ossicular chain and reconstruction of the scutum with a horseshoe-shaped cartilage in contact with the malleus' neck, were evaluated retrospectively.
  
  
  
  The experimental results showed similar volume velocities at the stapes footplate for the fixated and unfixated cartilage as well as for the unfixated bone. However, the fixated bone yielded significantly reduced volume velocities. Clinical data confirmed that the cartilaginous horseshoe- technique allowed for a stable reconstruction of the scutum with satisfying audiometric outcome.
  
  
  
  In case of cholesteatoma surgery and the need for the reconstruction of the scutum, no adverse effects on hearing outcome are to be expected by using the malleus' neck as an anchoring point for cartilaginous scutum reconstruction.
  
  
  
  NA. Laryngoscope, 127:1427-1434, 2017.
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: Antoniu-Oreste
authors.initials: AO
authors.lastname: Gostian
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Schwarz
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Pazen
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Anagiotos
authors.affiliation: Jean-Uhrmacher-Institute for Clinical ENT-Research, Cologne, Germany.
authors.forename: Magdalene
authors.initials: M
authors.lastname: Ortmann
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: Karl Bernd
authors.initials: KB
authors.lastname: Hüttenbrink
authors.affiliation: Medical Faculty, Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Cologne, Germany.
authors.forename: Dirk
authors.initials: D
authors.lastname: Beutner
mesh_terms: D000158:Acoustic Impedance Tests; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D001844:Bone Conduction; D002648:Child; D018424:Cholesteatoma, Middle Ear / Q000503:physiopathology / Q000601:surgery*; D004424:Ear Canal / Q000503:physiopathology; D004429:Ear Ossicles / Q000503:physiopathology; D004432:Ear, Middle / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008307:Malleus / Q000601:surgery; D008875:Middle Aged; D055171:Nasal Cartilages / Q000637:transplantation; D012189:Retrospective Studies; D013199:Stapes / Q000503:physiopathology; D013701:Temporal Bone / Q000601:surgery*; D016896:Treatment Outcome; D014432:Tympanic Membrane / Q000503:physiopathology / Q000601:surgery; D014433:Tympanoplasty / Q000379:methods*; D055815:Young Adult
keywords: Epitympanic wall; audiometry; cartilage; cholesteatoma; middle ear