Incus footplate assembly: Indication and surgical outcome

Mina Park, Sungjun Han, Byung Yun Choi, Sun O. Chang, Chong Sun Kim, Ja-Won Koo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Objectives/Hypothesis: To review surgical findings and hearing outcomes of incus footplate assembly (IFA) for the patients with conductive hearing loss due to missing stapes superstructure with a mobile stapes footplate. Study Design: Retrospective case review and survey. Methods: Pre- and postoperative audiometric data and intraoperative findings were reviewed. Postoperative air-bone gap (ABG) and ABG closure (postoperative air-conduction threshold–preoperative bone-conduction threshold) were analyzed. Results: The causes of missing stapes superstructure and conductive hearing loss were congenital ossicular anomaly (n = 5), chronic otitis media (n = 2), and congenital cholesteatoma (n = 1). The prosthesis was designed to fit between the medial side of the incus and stapes footplate and had a mean length of 3.6 ± 0.5 mm. The mean pre- and postoperative ABG were 38.3 ± 4.8 and 13.3 ± 10.0 dB, respectively. The postoperative ABG at frequencies of 0.25, 0.5, 1.0, 2.0, 3.0, and 4.0 kHz were 20.0 ± 15.4, 16.9 ± 11.9, 16.3 ± 10.3, 10.6 ± 7.3, 12.9 ± 14.0, and 23.1 ± 16.2 dB, respectively. The mean ABG closure was 9.5 dB (range, −1.3∼35.8 dB). Seven cases obtained the best results (mean ABG closure ≤10 dB). In the remaining patient, the mean ABG closure was 9.5 dB until 6 months after surgery, but was 35.8 dB 1 year after surgery. Conclusions: IFA seems to be a reasonable surgical option in patients with missing the stapes superstructure, but with a mobile footplate in which the long process of incus is preserved. Level of Evidence: 4 Laryngoscope, 126:2569–2573, 2016.

Original languageEnglish
Pages (from-to)2569-2573
Number of pages5
JournalLaryngoscope
Volume126
Issue number11
DOIs
StatePublished - 1 Nov 2016

Fingerprint

Incus
Stapes
Air
Bone and Bones
Conductive Hearing Loss
Bone Conduction
Laryngoscopes
Otitis Media
Hearing
Prostheses and Implants
Retrospective Studies

Keywords

  • Conductive hearing loss
  • indication
  • ossicular anomaly
  • ossicular replacement
  • surgery

Cite this

Park, Mina ; Han, Sungjun ; Choi, Byung Yun ; Chang, Sun O. ; Kim, Chong Sun ; Koo, Ja-Won. / Incus footplate assembly : Indication and surgical outcome. In: Laryngoscope. 2016 ; Vol. 126, No. 11. pp. 2569-2573.
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abstract = "Objectives/Hypothesis: To review surgical findings and hearing outcomes of incus footplate assembly (IFA) for the patients with conductive hearing loss due to missing stapes superstructure with a mobile stapes footplate. Study Design: Retrospective case review and survey. Methods: Pre- and postoperative audiometric data and intraoperative findings were reviewed. Postoperative air-bone gap (ABG) and ABG closure (postoperative air-conduction threshold–preoperative bone-conduction threshold) were analyzed. Results: The causes of missing stapes superstructure and conductive hearing loss were congenital ossicular anomaly (n = 5), chronic otitis media (n = 2), and congenital cholesteatoma (n = 1). The prosthesis was designed to fit between the medial side of the incus and stapes footplate and had a mean length of 3.6 ± 0.5 mm. The mean pre- and postoperative ABG were 38.3 ± 4.8 and 13.3 ± 10.0 dB, respectively. The postoperative ABG at frequencies of 0.25, 0.5, 1.0, 2.0, 3.0, and 4.0 kHz were 20.0 ± 15.4, 16.9 ± 11.9, 16.3 ± 10.3, 10.6 ± 7.3, 12.9 ± 14.0, and 23.1 ± 16.2 dB, respectively. The mean ABG closure was 9.5 dB (range, −1.3∼35.8 dB). Seven cases obtained the best results (mean ABG closure ≤10 dB). In the remaining patient, the mean ABG closure was 9.5 dB until 6 months after surgery, but was 35.8 dB 1 year after surgery. Conclusions: IFA seems to be a reasonable surgical option in patients with missing the stapes superstructure, but with a mobile footplate in which the long process of incus is preserved. Level of Evidence: 4 Laryngoscope, 126:2569–2573, 2016.",
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Incus footplate assembly : Indication and surgical outcome. / Park, Mina; Han, Sungjun; Choi, Byung Yun; Chang, Sun O.; Kim, Chong Sun; Koo, Ja-Won.

In: Laryngoscope, Vol. 126, No. 11, 01.11.2016, p. 2569-2573.

Research output: Contribution to journalArticle

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AU - Han, Sungjun

AU - Choi, Byung Yun

AU - Chang, Sun O.

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