title: Prognostic factors in ossiculoplasty: a statistical staging system.
abstract: OBJECTIVE
  To determine factors that predict hearing results using a standard prosthesis system.
  
  
  METHODS
  Retrospective chart review.
  
  
  METHODS
  Tertiary referral center.
  
  
  METHODS
  All patients undergoing ossiculoplasty with the Dornhoffer HAPEX partial and total ossicular replacement prostheses (PORP and TORP) from February 1995 to May 1999 who had documented postoperative follow-up and no congenital atresia or stapes fixation. A total of 185 patients (200 ears), 105 men and 80 women, were evaluated.
  
  
  METHODS
  Ossiculoplasty with the Dornhoffer prostheses.
  
  
  METHODS
  Hearing results using a four-frequency pure-tone average air-bone gap (PTA-ABG). Multivariate statistical analysis determined the effect of mucosal status, ossicular chain status, and type of reconstruction techniques on hearing.
  
  
  RESULTS
  The PTA-ABGs were 13.4+/-8.1 dB and 14.0+/-8.4 dB for the PORPs (n = 114) and TORPs (n = 86), respectively, which was not statistically different. When the malleus handle was present (n = 126), the PTA-ABG was 11.6+/-6.2 dB, compared with 16.9+/-10.1 dB when it was absent (n = 74), which was statistically significant (p < 0.05). Mucosal fibrosis, drainage, revision ear surgery, and type of surgical procedure had a significant detrimental impact on hearing. The type of pathologic process (perforation vs. cholesteatoma) had no significant impact on hearing results.
  
  
  CONCLUSIONS
  The revised staging system, the Ossiculoplasty Outcome Parameter Staging Index, more adequately predicts hearing outcome in this series of 200 cases.
authors.affiliation: Department of Otolaryngology/Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock 72205, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Dornhoffer
authors.forename: E
authors.initials: E
authors.lastname: Gardner
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006314:Hearing Loss, Conductive / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009998:Ossicular Prosthesis; D019933:Ossicular Replacement; D011379:Prognosis; D012189:Retrospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome